Well let me be frank, as I know you are wanting the "real scoop". During my quite heavy days, I found that the seats on Indy were the tightest in the Park. Although still manegable, as when you are a large, bottom heavy gal like I used to be, the fat will adjust to the seat you are getting into. Be aware when you enter the ride vehicles as to how and which side the seat belts fasten from/to. This will speed loading and unloading for you and not make you feel like you are making people wait. I found that many of the turnstiles are not "fat friendly" and found that lifting my daypack over it as I went through at a sideways angle helped. (again, fat will adjust through these as well) Most restaurants have tables with chairs, so booths will not be a problemfor you. Restrooms can be tight if the Parks are crowded, but I believe all have handicap accessible stalls now and they work great if you need more room. I hope I have not offended anyone, as this was not my intent. Within th last few years I too had these very questions/worries and was seeking frank answers to help me plan. If you have anymore questions, I'd be glad to help answer and you can always PM me if you do not want to post in the public forums....have a super trip!