The Kodak site is correct and I have seen a lot of film fogged because of many things, not the least of which is heat or extream cold. Many people mistake that for xray damage. In reality, film is not usually harmed if you carry it on the plane.
Another thing I have seen a lot of since 9/11 is film that is mailed to processing labs.
It is literally ruined with the new postal scanners. Not all locations have these scanners, but, without knowing who has them, would you take the chance? Folks, you have paid a lot of money for your vacation, preserve the memories by having the film processed before you go home if you have any doubts about the xray machines at the airports. Pay the extra 2.00 or so bucks to have it done in an hour. It is silly for the savings of a few bucks to chance loosing your shots.
After having spent a few years in a lab and seeing what can happen to film either ruined by xrays, send out labs, heat, cold and whatever, it makes no sense to not leave it somewhere where it will not be ruined or lost.
I have spent time with people who have lost their wedding pictures because they would not spend the money to have them done at the in house lab and chose to "save" by sending them out. They saved a lot of money, they did not have to pay for them because they were lost or ruined and nothing we could do would help.
One of the few joys I had when I worked in the lab, was processing (preserving memories) vacation pictures. Each and every shot was looked at and corrected accordingly. You will not get that at a send out lab. Every roll is automated. No one sees them. It is an assembly line production. Do you want that for your film? For your memories?
BTW and an FYI, I no longer do film. I no longer work at Wal*Mart, but, do believe, totally, in one hour or onsite processing. Well.......at least the one hour that actually looks at the film, IE:
WalMart, Eckard (sp?) or Target. NOT....Walgreens, CVS, etc.