We are having a backyard wedding and having a bartender from our favorite local bar tend the wedding. He is not coming through any type of bar service company, we are just providing alcohol and he is tending the bar with a second bar tender.
Is it appropriate for him to put out a tip jar? We are still paying him for his time and for the drinks, but I feel like he should also be able to accept tips for his work as he would at bar tending anywhere else. It is supposed to be a casual backyard wedding with beer (some in bottles), wine, and signature cocktails but it's a big event (175 people) and I just want to be sure that this does not seem too tacky.