We are having our wedding at a camp site, so pretty rustic. The bartender provides plastic cups, or glasses at a price of $3/pp. The venue people mentioned that one bride had used mason jars as glasses and the bartender worked with those. I like that in theory, but what if people want to switch drinks? Does the bartender wash it or do we just have to buy a ton of mason jars? I know other people have done this before, so please let me know if you have (or if you think its just easier/cheaper to go with the glasses from the bartender)