my son has Osgood-Schlatter disease... . It has been so painful for him to walk the past week and the dr. said this can last months and months. They are putting him in physical therapy, and giving him some meds to help... So my question is... we are going to DL next month and if he is not any better... ( meaning the pain when he walks) I think I might need to use a wheelchair. Do they rent these? Do you have to leave them out like u do strollers while ur in line? I am clueless to this issue, but I dont want him to be in pain while we are there. I know how hard it is to let alone walk around DL much less with a wheelchair.. any suggestions? Or even any advice would be wonderful .. thanks!