Our family has visited Jungle Jim's Waterpark every year for the past 8 years. Our boys are now 18 and 15, and we still have so much fun when we go. This visit we had 3 other teens with us too.
Jungle Jim's is a great little waterpark, not too overwhelming, and safe enough for "tweens" to run around on their own. The park isn't huge, like WaterCountry USA in Virginia, but there is still plenty to do. There are several water slides and they are a lot of fun, and just hanging in the lazy river is fun for everyone. I am always surprised how our active teens continue to love the lazy river too.
One thing about the park is that you pay for each place....like the waterpark is separate from the bumper boats (although you can always find a coupon in a free local coupon guide for a free bumper boat ride with waterpark purchase), the mini-golf, go-carts, etc. You can go enjoy the other activities without having to purchase tickets for the waterpark. But then again, if you want to enjoy all the activities, be prepared to pay extra for them.
You cannot take coolers inside, but we typically load up with water and sometimes food and keep it in our car. The parking lot is very accessible if you take a trip out for a quick lunch or to drink a bottle of water. There are also fountains inside. We have also left the park to eat at a local restaurant in Rehoboth and then returned to finish our day at Jungle Jim's. However, we decided this year to just stay and eat there. The food is VERY reasonably priced at the snack bar and it is really good too. They have great burgers and fries, but watch out for seagulls who want your food too :) Our kids said the chicken fingers were excellent. There's also ice cream, pretzels and other things to buy....all, in my opinion, inexpensive for an amusement park.
If you want shade, try to get there upon opening to grab a seating area under the large umbrellas. There isn't much shade outside of those umbrellas. You can rent cabanas for groups but we have never done that. If you rent a cabana with a group, you are allowed to bring your own food and drinks inside.
There are several sections just for younger/smaller kids too. There are also plenty of chairs if you want to sit at the entrance to the small wave pool/beach area at the lazy river. That's a great place to sit and relax while staying wet in the surf of the wave pool.
You can also rent lockers if necessary. We have never, ever had a problem with theft or anything else at this park, although you never know when that could happen. It's a great family place and the lifeguards do a wonderful job at keeping order without being ridiculous.
We always look forward to our fun day at Jungle Jim's each year, and we are never disappointed.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.