We rented the 75 foot Excursion at Wahweap Marina for 6 nights/7 days. There were nine (9) in our party...a 79 year old, a 74 year old, a 60 year old, a 54 year old, a 53 year old, a 52 year old, a 35 year old and two 15 year old twin boys.
This Houseboat was 'top-notch' and was way nicer, more spacious and better equipped than we expected...very clean, well maintained and 'like-new.' In fact, the ONLY single thing we found wrong during the entire trip was one of the overhead light bulbs in the master bathroom being burned-out. There was plenty of room for all of us without anyone having to sleep in the 'common areas.' (In fact, one of our staterooms was rarely used, as the grandmothers actually preferred sleeping on the upper deck area.)
As an aside, we originally considered renting the 75 foot Odyssey because of the extra bathroom, extra stateroom and washer/dryer, but we were glad that we did not! Having no 'visual obstruction' on the upper deck is way better for sightseeing and, more importantly, it is WAY SAFER when driving-the-boat from the upper cockpit.
Our rental 'check-in' process was with Carole and she was great. Our Houseboat 'check-out' process was with Nicole and she was great.
While 'the guys' got checked-out on the boat 'the girls' shopped at Walmart and Safeway. We called back to the girls a few times as we checked-in and toured the Houseboat so as to tell them to "forget buying" this-and-that. Specifically, no water buckets/pans for getting sandy feet cleaned off were required (there is a dedicated water hose for this purpose on the front deck, plus an outdoor shower on the aft swimming deck)...no extra cooler(s) for ice/drinks were required (the marina had a very large and free 'loaner' available, plus the fridge is huge, the on-board freezer was quite large and there was a large ice maker-chest in the upper deck bar-kitchen area)...no extra beach towels or beach chairs were required (there were plenty of quality towels and plastic chairs for all of us)...no disposable plates/cups/forks/knives/spoons were required (there were a ton of 'real ones' on board and the dishwasher works great; but still get some plastic drinking cups)...no drinking water jugs-bottles were required (the marina sells and will board the large 5-gallon jugs for you, along with a pump...we got 6 large jugs and the pump worked great; we still had almost 1 full jug left at the end...and we used lots of water!)...no firewood was required (the marina sells and will board firewood which is super convenient, burns well and is boxed-wrapped so as to stay dry when stored on the forward lower deck area)...no bags of ice are required from downtown (the marina sells and boards it; we got 10 bags of cubes and 10 blocks and never used it all because of the plentiful on-board ice makers an ice-chest storage)...no extra toilet paper is required (there is plenty on board).
Similarly, we also called back to the girls to tell them to buy a few things. BUY-BRING a few sleeping bags for sleeping on the upper deck (the on-board deck pads were excellent quality, clean and comfortable; plus the lie-flat upper deck dining area table-seating area is quite large and is well covered). BUY-BRING the high-quality firestarter sticks-blocks and the long-stem firestarter matches (the sand may be wet and there will likely be some wind, but these items will always make starting a campfire a 'no-brainer'). BUY-BRING extra paper-towels (there were a fair amount already on the boat, but we used only paper-towels...no napkins/ kleenex; we got 4 extra rolls for our trip and pretty much used them all). BUY-BRING plenty of extra kitchen garbage bags that tie shut and at least 10-20 of the larger/stronger 'contractor bags' (we loaded the smaller bags into the larger bags to avoid spillage, plus it makes it way easier to transport your garbage off the boat). BUY-BRING a couple flashlights + batteries. BUY-BRING a couple blow-whistles and neck or wrist straps for wearing them (necessary in an emergency if 'out-and-about' on a paddleboard or on a jetski without a radio).
As an aside, it is VERY IMPORTANT to have at least 1 set, and preferably 2 sets, of two-way handheld portable radios + batteries. These are ABSOLUTELY NECESSARY for manuevering the Houseboat in close-quarters, for scouting possible beaching/mooring locations, for getting the Houseboat beached-and-anchored and for then unbeached-and-unanchored it, for hiking near your mooring-beach location, etc...DO NOT LEAVE WITHOUT HAVING THESE!)
Have two (2) or more people in your party that are capable of being the 'Houseboat Captain.' That way, even if one is 'out-and-about' exploring there is another available on/near the Houseboat to handle any mooring or weather-related issues (i.e. - if strong winds or storms arise and start to move the Houseboat and/or dislodge the anchors).
Pay attention to "how-to" and DO properly anchor the Houseboat when mooring/beaching it. (Especially with a longer/larger Houseboats like ours.) Fortunately, we did pay attention and tried hard to "do it right," which ended up "paying off in spades" for us.when a pretty significant storm with heavy rain and very strong winds rolled through on day 5. In spite of lots of Houseboat movement, we stayed in-place and "secure."
Consider two (2) powerboats instead of one (1) powerboat plus 1-2 jetskis. First, having 2 powerboats allows for 1 being left at the Houseboat for skiing/wakeboarding/tubing while the other is used for 'exploring,' for fetching supplies, or for scouting the next Houseboat mooring location. (Way more 'options' for a larger party and for parties with differing physical abilities and desires.) Second, it is way safer and faster to travel by powerboat (vs. jetskis), especially in the main channel of the lake. (Which also opens-up more mooring-beaching options since you will not be forced to park the Houseboat 'nearby' the various canyons-attractions-marinas.) Further, it makes it easier to take more people with their 'stuff' along. Perhaps one of the most important reasons for having two (2) powerboats is that it actually makes it possible to preserve your Houseboat 'Toy Tank Fuel' for main engine/generator use. (Houseboat engine and generator gas use and fuel tank capacity WILL be a factor during your trip!) You are able to preserve the 'Toy Tank Fuel' for auxilary/reserve use by switching out the 'at Houseboat' and 'away-from Houseboat' powerboat everyday, and by then taking the 'away from Houseboat' powerboat to the nearest Marina to top-off its gas when you are out-and-about. (Getting the powerboat topped off at a Marina everyday is actually more logical and easier than it sounds, as getting to Rainbow Bridge and most other interesting 'cruising canyons' will likely take you by or nearby a marina anyway; Plus, it is a great and efficient way to get rid of your Houseboat garbage daily, too.) Finally, it is cheaper to rent 2 powerboats than 1 powerboat and 2 jetskis (like we did)...and 'rental' powerboats are WAY more reliable and trouble-free than any 'rental' jetskis.
These are the main things that I can think of that are important (without spending many more hours writing this).
"Bottom line"...this is likely the best vacation experience we have ever had and we already know that we will try to rent the same Houseboat from the same people again!!!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.