This is how you get your tab higher.

I'm always scanning my tables and keeping drinks filled. 2nd and 3rd rounds are typically how you're going to get your tab higher. BUT I never push drinks and try to up-sell a table.

The way I get a lot of second and third and fourth rounds is by being AVAILABLE AT THE TIME in which they may WANT TO ORDER ANOTHER. That's ultimately what my job is anyways, and it also works for getting the tab up.

I'm usually waiting until I see about 2-3 fingers left in their rocks glass. 3-4 for beers.

I usually say, "Would you like me to get you another drink here in a minute?" That way I can approach before they've finished and have another out to them by the time they're finishing.

Seriously, scanning is key.

I don't want them to finish their drink, sit without one for 10 minutes, and then ask if they'd like another round. At that point, they're often used to not having one and will reject the offer.

NOTE on water: Liquor drinks and wine don't quench thirst.

I keep waters filled for these reasons:

a) genuine consideration of guests

b) I know they have something to drink if they finish their cocktail, and I'm not immediately available to take an order for another round. (it gives me peace of mind knowing they have something to drink regardless.

NOTE on coke refills: 2-3 is enough. After that, they'll need to ask me. At which point, I'll happily do it, but I'm not approaching any table asking if they'd like a 9th Dr. Pepper.