It does seem a little strange to only have one of each character, if people have paid 40 grand a day to come and fuck Delores, and she out wandering around with a guy who dosnt want to fuck her, that dosnt seem a good economic model.
Plus making a bunch of clothes in the right size for each person, most of which they will never wear?
Again to me all of these aspects point to a holodeck type situation, where even the room where the clothes are available is an illusion, where Delores can be taken for conversations as soon as the real people are asleep, and where even if you bump into another real human you might be able to kill them after all if they are just avatars, like a massive multiplayer game.
Of course that wouldnt explain they they left a bullet inside the girl from mission impossible 2.