why you take your gf to SB? you arenĀ“t walking with your own beer in a bar Especially when you are jealous, it becomes danger.
All i could suggest on this would be to just keep your head. Your gf will consistently say no and if they keep pesting you just then step in. calmly. If things start to heat up then just try to defuse the situation. Yes your standing your ground n protecting yo woman n all that jazz but don't spoil a holiday with a black eye / slash night in cells with a huge fine.
I don't see it as a big deal. I don't get jealous and the girl I'm with are usually smart enough that they know how to turn down average guys politely and mock the really annoying ones.
I'm sure she'll be okay.. just stay with her.. its not like the ratio is that horrible, that you gotta baby sit her ... Im sure she's a big girl, and can take care of herself?