Ah yes. I thought about that but forgot to mention it. I think this could be mostly solved by some combination of a) canceling reservations (if the place is bus

Ah yes. I thought about that but forgot to mention it. I think this could be mostly solved by some combination of a) canceling reservations (if the place is busy these would often be replaced by a waiting list or walk-ins), b) avoiding excess inventory, c) using unused reservations themselves or having friends use them