Were you close to fitting in your previous trip? Ok, so there are a ton of rides at this park. Some are pretty strict on rider dimensions since they're very forceful attractions (Superman: The Ride, Wicked Cyclone), but that in no way means you wouldn't be allowed on. I suggest trying out the test seat outside the queue before getting in line. Batman: the Dark Knight is a rollercoaster which I'm almost positive has a seat towards the middle of the train with for accommodation of people with larger size. Those are three of the high profile roller coasters; now there are plenty of other things to do at the park, and I think you could find a good time doing a lot of other things (smaller attractions, shows, etc) there.

Don't be upset that you did not fit, I understand it feels bad but I'm more happy that you were safely given the right protocol by ride operators. If you were close to fitting before, and they tried to secure you in the seat a few times before escorting you off, I think you should have no problem now that you're comparatively smaller. I hope you have a good time if you decide to go!