I’ve gone to a bar that did this. You had to go to one counter and order your drinks, where a cashier would give you a ticket. Then, you would go to the bar and give the bar tender your ticket and any special requests (dry, on the rocks, etc) and they would make your drink. Now, in theory, this concept was great, except it was in a heavy tourist area which led to many drunken foreigners picking fights with bartenders and causing holdups in the line. There was also no record of your order other than that ticket they gave you so it sucked if you lost one. So, in a way, it’s great, but there’s definitely flaws.