Before trying to figure out how much to sue for you need to determine if you have a proveable case. The burden is on you to prove.

Seems like your friend needs to apologize. I would not do anything further as your friend could face crminal charges and you could be involved in...

Your doctor is asking for a "reasonable accommodation" and under law, the company can reject it and that sets up a legal dispute. Contact a lawyer...

The speciific issue reaised in any court including small claims would be barred as the two previous answers allude to.

Hire a lawyer in your state to review all of the signed agreements and advise you as to the best next step.

A local lawyer can review your agreement and the Facebook terms of service and advise you on what to do next.

The header of your question is different from the rest of your question. So I am unsure what your actual question is.

You should re-read the signed contract very well before doing anything. There may be something in there about delivery date, choice of venue in...

Based on what you wrote, I don't see any form of discrimination and it sounds like you were the one not doing what the average AIRBNB person does.

Without the benefit of reviewing all the written documents a proper answer can't be given. Pay a lawyer in your state to review them all and opine.