Hello and Welcome !!! My husband and I are both large/overweight people, sometimes called "pooh-sized" on these boards. You will find Disney rides are accomodating for people of all sizes. I am 5'6" and 250 lbs and DH is 6' and 400 lbs. The only ride we have trouble fitting in is Space Mountain. We ride Splash Mountain and Big Thunder Mtn by requesting to sit in our own seats. The Splash Mountain logs generally seat 2 people side by side, we just ask the CM if we can each ride alone. Disney Cast Members are very accomodating and helpful - we have never had an issue.