Generally, you are expected to be capable of removing your own footwear. If I'm just having reflexology done, I do it as part of a pedicure, so I've taken off my own shoes. If I were to have it done at a spa as part of massage therapy, I would have had to change into a robe and slippers anyway, and you have to undress yourself, so either way, you're taking off your own shoes and socks.