We just returned, and I could not fit on the Hulk, even a modified seat, nor could I fit on Ripsaw Falls or Dragon Challenge. I did not test Rip Ride Rockit, but my DD rode it a few times and said she didn't think I would have fit on it, she is much smaller than me and she had some trouble with the thigh area.
I was able to make it on FJ for our first day, I was wearing thin cotton parachute-type capris. My second try was our last day, and I couldn't get the second click on the test seat - but I was wearing jean capris, I think it made a difference. I may have been able to make it on the ride itself, if I made sure to scoot all the way back in the seat, but it was a tight fit the first day and I didn't want to take a chance. I was psyched I made it at all, lol, didn't want to ruin the moment.
Rode Mummy without issue, Flight of the Hippogriff (DD and I were seated in our own separate cars, we had to ask). Oh - on Bilge Rate Barges, I had some trouble with the seat belt, and the TM pointed out there is at least one seat in the boat with an extended belt (I think it was red). I used it without problems.
No issues with Men in Black or Spiderman, I did have a problem with the Simpsons ride but not due to my weight. (jerky, so I had to hold my neck throughout) I didn't make it to ET this trip, so I have no input there.
For reference, I wear a size 26/28 pants and 24/26 shirt, with most of my weight in my hips and thighs. Good luck, I hope you are able to ride most of the rides!
