New York is expensive and I'll say it, often overrated. When you go to a bar or restaurant, you pay for the scene. But if you just want to get silly drunk on fruity, crazy-colored margaritas, consider the chain Dallas BBQ. There are locations all over, but I tend to stick to the ones in Chelsea or the East Village. I wouldn't advise ordering the food, unless you're trying something small to stave off a hangover. (There are much better, pricier places for barbecue. The offerings at Dallas BBQ are mediocre at best.) The restaurant staff won't rush you if you decide to drink a Texas-sized margarita and hang out with your friends. They won't even get annoyed when you can barely leave the place once you're done, either. I may or may not speak from personal experience(s).
www.dallasbbq.com/
261 8th Avenue
+1 212 462 0001
Google map: bit.ly/lZcGPQ
Is this your business?