We took the family up to KeyLime Cove in Gurnee, IL. for New Year's Eve. We had signed up for the New Year's Eve party package which included a large room (2 adults, 4 kids) plus a dinner buffet and a breakfast buffet along with admission to the water park. Overall, everyone had a great time.
There are two things I really want to highlight about KeyLime Cove. First off, the staff is incredibly friendly. We're talking Disneyland level of friendliness here. The lady next to me at the check-in counter was having a huge meltdown over her reservation having been cancelled and the agent serving her handled it with grace, poise and a concerned-yet-friendly smile. Second, I had expected to be overwhelmed by the smell of chlorine in the water park, but it's nonexistant. KeyLime Cove uses an ozone disinfection system to keep the water clean. As a tech/science geek, I found that to be pretty fascinating and it made me wish I could have taken the behind the scenes tour to learn more about it (offered on weekends only).
There was a ton of stuff for the kids to do besides hang out in the water park. There were a number of activities going on over at the Leaping Lizard's center. The biggest non-aquatic hit was the arcade, though. The arcade issues cards which you swipe for play credits on each machine. It's pretty ingenius and you can end up spending way more money than you had intended to. Adults get special wrist bands which act as keys and are also used to charge things to the room such as alcohol and other items. Again, you'll spend way more money than you had intended if you're not careful. Every room in KeyLime Cove has a fridge, so you'd do well to bring your own soda, snacks and beer in order to minimize expenses.
The dinner buffet included in the package we bought was nothing to write home about. It was decent, and the kids ate until they got their fill, but it wasn't something I'd have been happy to directly pay for. The breakfast buffet was really good, though. I think next year if/when we go, we'll either hit one of the actual restaurants inside KeyLime Cove or we'll order out.
We will be going back at some point, however I don't think that KeyLimeCove is the sort of place where you'd spend more than a night or two. There just isn't enough to do there for any longer without getting bored. For a one night getaway, though, its fantastic!