Me and girlfriend got into a fight but we still going on this vacation this weekend need advice ?

Solve the problem before, or dont go on your vacation.

try solving it before the weekend. i read something once that really stuck with me - "when you and her/him are fighting, you both need to remember that it's you two vs the problem, not you vs her/him"

hope you both resolve this and have a great trip :)

Set some rules that you both agree on before going off. Make sure you both stick to them, make it as if it were a vacation challenge and see how it goes. Fights only come from the lack of communication and lack of communication comes from lack of respect/trust for your partner so listen to her and impose (nicely) so that she listens to you as well, it goes both ways. You have to work harder. 

How about communicate and work out a solution before this vacation comes along? Be a man, offer a solution.