My doc told me no alcohol for 1 year. But of course I knew I would not follow that. At 3 weeks out I had 2 glasses of wine and was fine. at 4-5 weeks out I had some mixed drinks with vodka. Yes, as you lose weight your tolerance will lessen and of course if you aren't eating much then you will absorb the alcohol faster. Alcohol is also a blood thinner so in the early stages you do have a slight risk of internal bleeding if things aren't completely healed. For the most part, In all honesty I'm sure you be fine with a few shots. I would just drink them slowly (like as in spaced out) and drink Water in between and just try to be aware if anything feels too 'off'.
FYI - I used to drink beer or 'bombs' (shots with carbonation, usually redbull) with my girlfriends when we go out. I didn't want to tell them about my band yet so last time I went out I just said I wasn't drinking anything carbonated because "it has been giving me heartburn lately". It's not totally a lie because if I even take a sip of something carbonated I get terrible chest pain!
Best of luck to you! Enjoy your time and be safe!