We have a two year old. His clear favorite is storm along bay. There is a a small round "baby" pool that has sprinklers, and it is very warm. Maybe one foot deep. He likes that OK. But the real toddler action is in the area of the main pool on the yacht club side, where there is lots of sand and water that is zero entry all around the sand, and maybe 3 feet deep at the deepest. So it is a place were supervised preschoolers and toddlers can have a ball playing in the sand, wading, etc. Also, one great thing about it is that over on the ship that has the stairs up to the main pool slide, there is a little pool on the ship and a small slide. He also really likes the water falls (being carried), and "riding" around the lazy river and whirlpool. The quiet pools at beach club are OK.
He also really likes wilderness lodge pools. They have a baby pool that is a little bit bigger than the one at SAB, but it doesn't have the squirting water. It is more rectangular. It is flat and smooth bottom and little ones like to run and stomp in it. The main pool is pretty good too - its mostly for just being carried in, but the waterfall and current make it intersting and fun - he likes sitting on the wall where the creek comes in. The quiet pool here he likes, because of the bubbles. No sliding for toddlers at wlv, but preschoolers who are good in the water would be OK.
At okw, he was OK with the pool - hey, he's a toddler, he just wants in the pool - but it wasn't as much fun really as bcv and wlv. There is a toddler pool there by the main pool. No sliding for toddlers. We tried one of the quiet pools once, and it was fine for a pool.
At SSR he really liked the donald duck, but beyond that didn't really get in to anything.
We haven't stayed at bwv since he's been born.