We did Wonder Works on Friday. I felt like it was a combination of FunStation and the (often times not working) hands-on things that we can find at our local science museum. If you go, make sure to get the $1.50/off coupon from the various Orlando attraction guides and also take plenty of sanitation wipes - my boys and I are sick with a cold while my DH is not - he's the only one of us who didn't go, so I'm attributing it to something we likely picked up at Wonder Works (anywhere you have a lot of traffic and the activities are hands-on, you'll want to be sure to wash your hands well anyway).
I was a bit disappointed in what we found inside because the outside looks so fun, and so does the website and the ads. Perhaps if I hadn't spent $15/kid plus $20 for me (ok, minus the discount, it was still $48). I thought it was a bit over-priced for what we got.
I would recommend going early (they open at 9 a.m.) as it got busier with summer camps ... we got there around 11 a.m. but when we went by on Wednesday at 9:30, there wasn't anyone there yet.
Hope this helps.