This is a hot topic on the boards and it makes my skin crawl everytime it gets started. And, of course, I always weigh in....
There are so many circumstances where getting a letter for permission is impossible...
DCL does NOT require a letter (and of course, they are simply requiring what immigration would/could request) and I really think that if it was absolutely required, they would. If you are traveling without EITHER parent of a child, a form is required. That's it. I know another poster said it is required but I have not needed it and I have never heard anyone post saying it is REQUIRED.
I know there are lots of stories posted about people traveling to Europe and Canada having problems with custody proof (funny point, the Canadian immigration web site states they would like to call the other parent if they are unsure....and how would they get the phone number??) BUT I have never read a poster have trouble on a DCL cruise.
Yes, the letter is a good idea. I battled once with un-cooperative ex to get the letter but I was never asked....I absolutely believe this is not as hard and fast as some posters state....search the immigration sites for the US and Mexico - there really is no written policy I have been able to find (except something about a change in Mexican policy a year or two ago). Don't look at travel sites, stick with the official sites....
I think this is a gray area with recommendations...
Just my opinion and I'd love to hear from others who have had problems with immigration (US or Mexico) on a DCL cruise
Personally, I'd love to see an actual policy with specifics regarding documentation (would court papers declaring custody being enough?, etc)...then we would at least know what to do
Barb