Since you will be in a chair, ask to stay on it and they will accomodate you. You even get a few surprises along the way. (I don't want to spoil it for you, but we did it last year in a wheelchair and it was different in a good/cool way).
I tell you what! It will be open when the fat lady sings. In my case, when the fat country guy sings (the country guy being myself of course)! But do ya really wanna hear me sing? I sound like one O' dem bad Am'rican Idol sing'rs but just ten times worst an' louder! Do ya really wanna hear me sing?