We too went to Aqualand last week. In fact it was a week ago today!!!!
I would recommend it. Especially now, as it's not too packed yet and you don't have to wait for hours in line to get onto a slide. We had a blast, got there at like 11 and didn't leave until closing.
We stayed at the apartments attached to Aqualand, so we got use of the wave pool and some other pools for free. We also got a discount on entry.
We're 25 and 28 and went with people our age (there were 5 of us) and we all had a blast.