The main pool has a kiddie pool area and playground in addition to what was described above. It also has a sauna in the lighthouse next to the hot tub. You can get food and drink from Gurgling Suitcase bar or Good to Go take out window.
The other pool that offers drinks and light snacks is between buildings 41 and 42. It has the Turtle Shack snack bar which is open from 10-5 during most pool weather and later when the crowds are bigger, days longer, and the weather warmer. This pool is a brisk fifteen minute walk to the Hospitality House as you have to walk with the roads and can't take the straight line route. due to canals and golf holes. This pool has a small playground for the young ones too and a hot tub for the bigger folks. There is a laundry here, bathrooms, arcade, and ice machine. We stayed near this pool once and found it quite lively at all hours.
There are two other pools located between buildings 55 and 56 and also between buildings 19 and 20 that don't have drinks except from coke machines. Each has a small playground for the young ones too and a hot tub for the bigger folks. Each has a laundry, bathrooms, and ice machine. We have stayed near the 55/56 pool once and the 19/20 pool three times. All are great places to enjoy mostly quiet pools. the 55/56 pool is about a brisk ten minute walk to the Hospitality House. The 19/20 pool is about a brisk five minute walk to the Hospitality House.
Alas, no slides at OKW, but you can always trek over to BWV to enjoy Luna Park or for the younger tikes go next to to POFQ or POR to use the little slides. No matter where you stay at OKW, you can find a pool close and of the type you like.