The person asking about access is planning participation, not requesting an exception to belonging.

A question about steps, seating, quiet rooms or timing is a logistics question, and it is asked by someone who intends to come. It is easy to hear it as a request for special treatment, which turns a practical matter into a favour and puts the asker in debt before they arrive. They are not asking whether they belong.

Answer the question directly with what you know, and say plainly when you do not know. Offer to find out rather than making them do the research. Treat it as you would a question about parking.