Took my DD10 and DS14 last August. We really liked Aquadica. The slides are fun, there's lots of slides, the river is great and seeing the dolphins is nice too. The kids climbing area was nice, though my kids were almost too old for it, but the older one liked dumping water on the younger one when she wasn't looking.
We spent 2 days in Aquadica. We had a package with SW, BGT, Aquadica and DC. Enjoyed all the parks. 1 day at DC, 2 days at the other 3 parks.
Aquadica was easy to get to from SW and DC. It's a five or so minute drive down from SW on the I Drive. We went the last week of August at the parks, and the crowds were not bad. Biggest crowd we saw was st SW on the Saturday of Labor Day week-end. We went to Aquadica on the Sunday of Labor Day week-end and we did not think the crowds were as bad as in SW the day before. We did Aquadica one day earlier in the week before Labor Day, and the crowds were fine. The longest lines were in the afternoon.