Haven't been to W & W for more than 20years...so probably shouldn't comment--but I will---YUCK! It's like a giant asphalt beach with each "attraction" right on top of each other. Maybe that's changed???
Aquatica--We went about 4 weeks after it opened last year. I agree with a PP's comment about the "lazy" river being a not miss attraction! We loved that more than the wave pool. DS13 spent most of the afternoon happily floating, twisting and swishing. Food=not so good...pricey and just so-so--I highly recommend not getting the all-you-can-eat meal---worse than a school cafeteria! Instead...get the pizza and chicken strips-VERY good! We liked the "beachy" areas with umbrellas and lounge chairs when we weren't on the attractions.
Might I recommend Typhoon Lagoon at Disney! It is a gorgeously landscaped park. (unlike the 2 above-Aquatica's landscaping will take a while to "fill in".)
The wave pool is awesome, plentiful beach chairs, truly relaxing lazy river and fun water coaster rides and the not to be missed shark reef. DH & DS12 spent a lot of time snorkeling through that tank! Food-typical Disney counter service stuff--but we like it!
Hope this helps. I consider myself somewhat of a waterpark expert as I live 2 hours from the waterpark capital of the world-The Wisconsin Dells! Been to all "The Dells" waterparks. LOL!!!