In this already murdered analogy, they aren't even paying all of the rent. There is a rumour they paid a server once but nobody has ever seen them. You have to bring your own food and wine and cook it, but you're encouraged to share with other tables. Some of those tables were paid to be there. There is also a stream of bored looking people wandering round, occasionally one of them will drop a snack on your table.

The only people you can see that your friend hired are interacting with these snack droppers, telling them which tables to go to. It's unclear if this is very effective.