I'm currently on the Pill, and as luck would have it, my period was to fall smack dab in the middle of our trip last October. I had a gyne appointment the week before we left, and I had come across an article about skipping the placebo week in order to skip a period (going straight to a new pack instead), so I asked him about it, and he was perfectly fine with skipping a period. I carried some supplies just in case, but ended up not needing them and passing them off throughout the trip (anytime I saw someone struggling with the dispensers in the bathroom)...
My doc did mention that only the monophasic pills should be used for this sort of thing...the triphasic pills can really screw up the system if used for this purpose...