So wait, are you saying that an 18 year old, a person capable of serving their country and putting their life on the line for the nation's safety in the service of the Armed Forces, can't attend a Cantina Tour without a parent or guardian?
Don't get mad at BioWare for that. It's the venue that has that rule. If an underage person is sold a drink from the venue, the venue could get in trouble. BW is just following the rules.