Hello,
I officially got the go ahead to take my niece to Disney World in March.
Now I need to figure out what paperwork I require to take her across the border.
I believe that all I need is a signed letter from my sister and brother-in-law giving me permission to take my niece out of the country.
Does anyone know if my assumption is correct? Is a regular letter fine, or does anything special need to be done to it? Or do I need some other sort of paperwork.
TIA for your help!
I officially got the go ahead to take my niece to Disney World in March.

I believe that all I need is a signed letter from my sister and brother-in-law giving me permission to take my niece out of the country.
Does anyone know if my assumption is correct? Is a regular letter fine, or does anything special need to be done to it? Or do I need some other sort of paperwork.
TIA for your help!