We are having an open bar. The reception site has bartenders that we use and in the fee includes their tip. I've been to lots of open bar weddings and guests always want to tip the bartender. Our event planner said that people are now putting a tip box by the bar stating something like "Please enjoy, compliments of Bride and Groom" and the tips go to the bride and groom to help cover the alcohol costs. What do you think of this? Thanks!