I'm curious on what, if anything, I need to do regarding a cash bar. I'm going to be sending out my wedding invitations in a few months and just thought about this. We will have our ceremony then a cocktail hour, where there will be free wine and beer served but after that, during the reception, we will have a cash bar. I don't want my guests to end up not being able to drink because they didn't bring cash so is this something I should add in the invitation? Or maybe on the response card just add a little something on the bottom, like (cash bar only) just to give my guests a heads up? Or should I not even worry about it? Thanks for any useful advice!