How to make braces not hurt.?

Kso, im getting braces in a few days, i have spacers on right now. I heard from various people that spacers hurt more than braces if so i have nothing to worrie about. I also heard from a handful of people that braces hurt waay more then the spacers do. I guess it varys on the person and how much pain they can take, but besides the point. I also heard that the day of getting your braces to chew gum and it wont hurt as bad is that true? it you have any other tips im willing to try anything because im going on vacation the day i get them on.