2) I'd definitely make that possibility more visible in any marketing.
3) Again, I'd make that a bit more visible in any marketing. (As a single person, if I'm going to have to schlep myself to the pharmacy, I might as well start at the clinic that's in the same building. So, I'm clearly not your targetmarket on this point.)
3) that may be true. But you may not have to, for example, schlep your sick 5 year old with you. That's the killer use case.