I visited a retirement community for a brunch buffet. The "host" who was seating diners at tables took rolling walkers from some people, refusing to allow them to keep them next to them at the tables. He gave a numbered ticket to each walker user from whom he took a walker. They had to present the tickets to get their walkers back. Of course they had no use of the devices to go to the buffet and back. These people were using the walkers mostly just for balance issues, I guess, as I didn't see anyone with an obvious limp or anything like that. I'm wondering if this practice is common or if there's anything illegal in it.