We had season passes for GA 3 years ago, we went 6 times. 2 out of the 6 times were OK, the other 4 were plain awful. The biggest problem is it sits directly between Philly and NYC, so you get tons of people from both cities, and many of them are extremely rude. I was in several verbal confrontations, and very close to two physical confrontations. People will just walk past you in line, it amazing, like it's totally acceptable behavior. I of course can't just let it go , so i say something , their response is always the same, " oh my friends are waiting for me up there". I will not go back, it's not worth the stress.
As for Sesame Place I live 10 mins down Rt 1, from there, and have not been there in years, for many of the same reasons as GA. Some aprents think their kids are the only kids entitled to have fun, they allow them to cut in line, and many times are the ones actually cutting in line. It is a good teaching experience for me , it makes it real easy to show my kids how not to act, and when you act that way , how you look.
We LOVE Knoebels, it is a pretty park, well shaded, inexpensive ,good food, and we have never had a problem with the type of crowd they attract.
I almost don;t wanna talk about the place , it's a well kept little secret.