Alcohol and breast feeding

Guess • 🔹Married to my high school sweet heart🔹Mom of two amazing boys, Maverick born Jan 2017 and Arius born Sept 2018
I'm a first time mom exclusively breast feeding. When my son is 2 1/2 months old my family (about 25 of us) are doing a huge trip to Las Vegas. I have never been a big drinker but I really really want to do one night out while in Vegas. What is the best method for doing this? Idk how much of a milk supply I can get stashed up while there since I can't bring what I already have stored. Could he do a day of formula? Can I get shit faced one night or am I really only allowed to have a few drinks? If I can get shit faced how long do I pump and dump?