The days are over when I used to carry 30 rolls of Kodachrome on an overseas trip (got too old). Our last camera store just closed down. When I am at home it will be easy to mail-order Tri-X (or other B&W film), but I wonder how it would be on a trip. Does WalMart usually carry it, or only color film? How about in UK and Europe? What does everyone else do (who hasn't switched to digital)?