Quote from Rachel in The One Where Rachel Quits
Gunther: After you deliver the drinks, take the tray- Rachel: Gunther, please. I have worked here for two and a half years. I know the empty trays go over there. Gunther: What if you put them here? Rachel: That's actually a good idea. That way they'll be closer to the mugs. You should have the other waitresses do that, too. Gunther: They already do. That's why they call it the tray spot. Rachel: Geez, I always heard them talk about that and I sort of just thought it was a club they went to.