So I understand from reviewing some older posts that the French airport authorities insist on X-raying film and won't settle for a hand inspection, unlike US airports. In effect this means that I have to develop my B&W film in my Paris hotel bathroom before I return to the US?

And incidentally, is it worth it for me to buy B&W sheet film and 120 rolls in Paris or should I buy it in the US? I'm thinking of buying a brick of Trix400 and 100 sheets of tmax 400 (higher speed because I apparently can't use a darned tripod in paris either!!!)