S.Y.
Oak Brook pool was nice had son's birthday there this year (6 Yo)
But my top recommendation would be.....Next year we are having our son's 7th bday party at the russell military museum in Russell Illinois (off 94 near Wisconsin border) We are letting our son pick 3 friends to go with us. You can order pizza kids get a dog tag and a ride on a real tank. They also get to hang out look at all fo the military vehicles and climb on some. We will have parents drop off kids at our house and then take them to the tank place for the party and drop them off at home. We have a SUV with third row....so we will allow him to fill up the car with kids. We went to this place a few weeks ago and it was so much fun.
Here is the link.
http://www.russellmilitarymuseum.com/