Have a fabulous trip!!! I don't have a colostomy, but the question I'd ask you is if you irrigate. if you do, then I imagine you need to bring all your equipment with you as well as some supplementary stuff. I have an ileostomy for 50 years ( since I( was 15), and while I wasn't out in the wilderness ( hiking) or climbing mountains, I did go to camp, and on hikes, and more recently flew around the country in a single engine plane, without a bathroom. When I camped, and hiked....I just went behind a tree, dug a hole, and "emtied". Changing my appliance was a little more complicated, back then ( no disposable stuff) but todays supplies just get trashed. I've snorkeled in Australia, on the great barrier reef, and swam in the dead sea and that made my appliance pop off. Ok, it was a mess, but I survived it. Be creative, and take extra things, just in case, like wipes, toilet paper ( needed that in china) paper towels, extra zip lock bags, double the amount of supplies you need....make sure you have tape. Imagine all the things that could go wrong, so you can plan what you need. I never travel without pain killers, as you never know when you might have a blockage. After you do all your planning, put the anxiety out of your mind, and just enjoy the adventure. But be sure to come back and share y our experiences with us.