I knew before I went to the Hyatt that I would be one of the youngest (paying) guests at the hotel. My travel partner and myself are both in our early 20's, but I honestly did not feel out of place.
Check-in was easy and WONDERFUL. We were greeted by a friend staff member who asked us if we were celebrating anything special to which we said "Vacation" - and he thought that deserved a complimentary bottle of champagne! He took the time late at night to answer various questions we had and really seemed to enjoy his job and actually want to help us.
The hotel grounds are amazing. The pool is never-ending, the koi pond is full of fish, and the lagoon is beautiful. I did not particularly care for swimming in the lagoon as the "sand" is made up of tiny gravel and just was not comfortable, but it is a beautiful addition to the property and loved just being around it. Lounge chairs around the pool and lagoon area were not particularly easy to come by but were not unable to be found even at the busiest part of the day.
The beach is pretty much un-swimmable, but on our last day there were about 10 people surfing and body surfing there. For swimming, Poipu beach is a quick 3-5 minute drive down the street (but is not within walking distance). Do the drive to Waimea Canyon, but don't stop just at the canyon continue to the top for an AMAZING view (which is the background image for Hawaiian Air's website at the current moment).
My only caveat would be to younger couples. At the pool the waiters would ask guests sitting all around us if they wanted drinks or food, but never us. At the luau (which is not worth $$, but no luaus are worth it no matter where you go in my opinion) we experienced the same thing where a waiter avoided us although we had been seated (drink-less) for 15 minutes and went to a family behind us that just sat down. I did bring this matter up when I checked out and $100 was taken off my bill. I expected an apology (which was all I needed really), and the gentleman said that he could see some younger employees being intimidated by younger guests. He really seemed to care that we were not taken care of, and I appreciated his concern. When you stay at a large resort sometimes you feel "lost in the crowd," but this experience made me have so much respect for the hotel.
In general the service was OUTSTANDING. I would definitely return to the Hyatt on a second trip to Kauai, though I would recommend doing as we did: stay a couple of nights in the southern part of the island and a couple of nights in the northern part. They are like two different worlds completely and both worth experiencing.











