Hey, I'm a big guy myself at one point <315 and I visited SFMM. My advice, stay away from OTS rides, those were the most problem givers. However, they also do have larger seats with the double buckle for bigger guest including batman, scream and superman, haven't tried riddler though when I went, was denied lol. As far as leg room on like goldrush, crossed legs works fine. Only time I've been in pain was on revolution, my knees were crushed by this metal bar on the back of the seat (not lap bar). Most.Uncomfortable.Ride.Ever. So to anyone with size as a problem, just ask the dispatcher or whoever is directing you to seats, that you'd like to find the bigger seat and they should accommodate quickly.