We're having a full open bar (mixed drinks and all...) and working on booking a bartender. Previously, we were going to purchase the alcohol ourselves and bring it to the venue, but after the bartender gave us a quote on how much it would per drink for her to just bring booze and charge us basically per drink, I'm considering that. My FI thinks that mark-up is too high, but I told him (based on the fact that most of my family doesn't drink) that it might end up being a lot less overall and we won't have alcohol leftover that maybe it's a good idea.
Just weighing the pros of having the bartender provide - which would be $3 / glass of wine, $3.25 / mixed drink, $2 can of beer. I think that's not too bad and most people will cost us around $10-15 a person, and with around half of our guests drinking that will come out to more like $1000 when we budgeted for $1500. The other scenario is that we spend $1500 on booze, and I'm almost certain we'll have tons leftover.
Anyone else have any experiences or care to comment on the prices above? If you need clarification, I'll check back shortly.