ALCOHOL?!?! What "could" I drink

Thanks for posting this! I'm off out tonight for my fiance's birthday and haven't drank for a while but after a good weight loss today i want to have the least amount of calories in the drink because i am 90% certain i'll go for cheesy chips enroute home!

Im tempted by going with what most people say and have vodka...if i have vodka and diet coke, is that ok? Or Would Archers and lemonade/tonic be better?

Don't think i'm brave enough to do it straight..oh and what is a chaser?

Haha you can see i haven't really been drinking since i've started on here!