Just thought I'd bump this up, since it's that time of year again, when we are considering what parks to go to over the summer.
We made it to DelGrosso's Park last year, and we thoroughly enjoyed it. Everyone was very friendly, the park was clean, and the food was good. It was also very reasonably priced. We used the coupon off the spaghetti sauce to save some money on our admission. We ended up going on a Friday, the last week in June, and it wasn't too crowded.
The kiddie area consists of a bunch of go-in-a-circle type rides, but that's what you expect to see at most amusement parks, I think. There were also a couple of games, for an extra fee, of course. At 45" tall DD was big enough for pretty much all but one or two rides in the main section of the park though, and we spent more time there than in the kiddie area. The wild mouse was rough, but DD loved it. The pirate ship was smallish, but a lot of fun. The park is small so you don't have to do much walking, and there were plenty of trees, benches, and flowers. It's not as 'nice' as Idlewild Park, but it was nice enough, we thought.
DD, 6 1/2 at the time, LOVED the water park. We spent about half the day there. DH also took her for a go-kart ride. We even returned for half a day on Sunday, before heading for home. Sunday was a little more crowded than Friday, but not unmanageable. We didn't get around to the mini golf. We ran out of time.
We are planning to go back this year, since we will be in the area again.