When I travel, I make sure to take the 1/4" foot that I have been working with. Most feet are snap-ons & that way you always have the same 1/4" seams.
I don't know if most feet are snap ons, because mine aren't. LOL. My Bernina feet do not work on my Janome machine and vice versa. But, it is a good idea to buy a travel machine that is the same brand as your main machine so the feet will be standard.