M.H.
I did the BC thing years ago when my period was due right around my wedding day and would have continued into my honeymoon. I was already on BC pills so asked my doctor about it and he said I could go back to back with two packs to stop the period from coming. I did that and it worked just fine. Cannot remember what pill I was on though and it was a long time ago (almost 13 years). So, if you did this you would to get on the pill far enough ahead of the vacation that would allow you to go back to back.