Also, if you have a list of orders, don't give them all at once. Instead, order the first drink, let them pour it, let them put it on the bar in front of you, let them walk to the POS, let them log in and add it to the bill, and when they come back and ask for payment, say "can I also get a uhhhhhhhhhhhh" and order your second drink.
Do this for as long as your order is, the larger the better. The reason for this is that staff are usually wearing pedometers and it allows them to rack up a higher score, and your fellow patrons will appreciate it because it'll add a small delay to their drinking pace, allowing them to savour the moment a little more.
idiot edit: I have absolutely replied to the wrong comment, but I'm 2cool4deleting so whatever