I go to WDW a few times a year and before banding I was a 26/28 and I rode every ride (and I mean EVERY ride). I had no problems getting on anything, the turnstiles at Snow White are a little tight but I would go through sideways without any difficulty. I will say that at Universal I didn't fit on the roller coasters and had to get off. You'll have no problem at WDW, enjoy.