Hey Sherlock, here's your chance to find out some important stuff about Sandi. 
Remember, bartenders always know everything- so listen carefully. You're going to get a clue about alcohol consumption. Pay attention! Also, tipping at any bar is encouraged. It's not going to cost you any money right here, but if you have the opportunity, let Max know that you're a big tipper- maybe he'll part  with some useful info.