I didn’t fit the first time I tried; the calf restraints wouldn’t close. I was 5’3” and 260. Only ride I’ve ever not fit on, including at universal. My mom was taller and heavier but fit because her weight was distributed differently. I lost 20 pounds and came back wearing flip flops instead of tennis shoes to get my feet deeper in the footwells. It was snug but I rode! I last rode at 220 and had no trouble in tennis shoes.
Some people with larger stomachs struggle with the back restraint. It depends how your weight is distributed and how you get yourself set before the restraints click into place, so trying the test seat is a really good idea on both counts