The official park site will have the only accurate answer. I haven’t been but looked into it and found a lot of people providing inaccurate info. SWO seems to operate like most parks in that if you have a physical impairment, you must have a medical evaluation at guest services daily and be given a paper pass stating what rides you are allowed on. Casts, braces with hard pieces, trach, limb difference, etc. Then I believe you are required to carry a pass if you are a wheelchair user since not all queues are ADA-compliant. Then there are cognitive disabilities. SWO is not officially part of IBCCES program but many say they showed that approval and SWO accepted it. AFAIK, SWO already accepts guests at their word so no paperwork of any kind is needed anyways. I couldn’t find evidence of requires proof needed. Just follow what is on their official website and you’ll be fine.