Too late now, but for others - I would suggest splitting your packs amongst your luggage, in case any peice goes missing.
I took a months worth of packs to America for a long summers holiday. We put it in all our suitcases, and were glad of it, because we did have some problems with luggage.
We only did it to distribute the weigh - it didnt occur, but if it goes missing, and its all in one peice, you are stuffed!
Flex - a holiday is really just another day(s), minus work.

No reason not to carry on with the diet while away. The goal remains the same after all. And to come back from a holiday with a loss is a better feeling then any event on the holiday! Lost 20 pounds on mine! Was a fantastic feeling, and alos worth the look on all my colleagues faces when I returned.
Way I saw it, there would be other holidays in the future, and I was going to see people, places and friends, not restaurants.
It can be done.
Have fun Toots!