Ask for hand checking. I always do. That way there is nothing to worry about. The more film, and more exotic film (120 or 4x5), the less objection there is. One time is safe for 800, 2 for 400, 3 for 200 and 4 for 100. That's just 2 trips. No way I'm subjecting my film to that. It's not just the cost of film, but also hotels, plane ticket and rental car, that you're risking to get your shots. And my granddaughter is 10 months old only once.