This 50,000 sq. ft. indoor water park packs in some serious water play no matter the frightful conditions outside. Areas include: Dip-In Theater - Indoor water splash ground with fenced toddler play pool (0-2 ft, three slides, fountains), Parrot's Perch - island playground (slides, climbing, water cannons, giant dump bucket, water spouts and fountains), Coconut Grove Adventure River - inner tube channel (2 ft), Coral Reef Cavern - water basketball hoops and Lily Pad float (4 ft), Palm Grotto Indoor/Outdoor Spa - whirlpool; Shark Slam, Gator Gush, Barracuda Blast, & Pelican Plunge - body and raft water slides for guests 48" and taller.
Bring your own towel unless staying at the resort. Life vests provided. Lockers available for $5. I saw many people leave their items on the tables (at their own risk). I found the changing areas to be limited: 1 family bathroom, bathroom stalls, open locker area (like a gym), and shower stalls with curtains are available. Bathroom shoes recommended (flip flops, etc). 13 and younger are required to have adult supervision. Swim diapers required for children who are not potty-trained. Annual passes available, see website for details.
I thought that CoCo Key was a little pricey since we decided not to do a package deal with a room, we just went to celebrate a family member's birthday. So admission was quite a bit for 2 adults and a baby just to spend a couple of hours. We did enjoy the slides and I loved the lazy river. My little boy was a little scared because music was playing so loudly that he never really got a chance to enjoy the kiddie side of the resort. There was also a lot of people since it was during Christmas break, so that was another downfall. It's a fun place though and now that my little boy is a bit older, I think he will get to enjoy it as much as his parents did!
While you can swim year-round in California, opportunities to enjoy water play are seasonally limited in Ohio. Coco Key's eye-catching tube slides project from the side of a otherwise ordinary looking building.
Once inside, your kids will be in aquatic heaven and you may just find that you're having fun too.
*Edit* 2012 - Our family (7, 5, 1 years) purchased the annual pass. $70 x 3 (not including the baby) is right up there with King's Island. I decided the annual +indoor water visitation rights were a great perk for my younger family. My kids are not shy and love every part of the water area. Hours have changed from my earlier post, check this link: http://www.cocokeycincinnati.com/media/docs/CoCoKeyCincinnati_ParkHours.pdf for hours.
The staff is numerous and mostly attentive, walking back and forth across swim areas. They are also younger and sometimes not as "customer-friendly" (smiley, cheery) as you might expect a more experienced hotel staff to be. This is no Disneyland. That being said, I have always asked questions with due courtesy and have been generally given decent help with a little patience and persistance. Examples: I left an expensive camera in the bathroom. Thankfully, someone returned it, and the manager put my camera in his office where I was able to claim it later.
When I intend to visit I always: check the time on the website, and call the desk to ask if the park is crowded. On a crowded day, it is not enjoyable to try and find an available table or keep track of a little one. I have only been to CocoKey on one crowded day, all of our other visits have been great.