Join the club...
...you will have the most trouble with rides that need to keep you restrained. Hulk, Dueling Dragons, Jarrasic Park River Adv, Duddley Do Right , Dr. Doom. I have a tough time with the coasters and Dr. Doom due to my chest...I never knew they had larger seatbelts until I started reading this board. Just ask the attendent if you can sit in the seats with the larger belts and you should be fine. The other rides I mentioned might be tight but you should fit. I don't know much about Suess Landing we did not ride any of the rides there last time but we plan to next time.
In Universal Studios you should be fine I don't remember having any trouble in that park, I even fit in MIB.