I too have taken my teenage niece to San Pedro with me a few times. She had the notarized letter from her mother and papers showing mom as sole custodian in lieu of dad's letter. We were never asked for them in Belize. When we returned to the U.S. on one trip, I got the business from the U.S. immigration people about who I was and why I was traveling with my niece--go figure--but they also didn't ask for the papers. My in spite of this, I would not want to risk being turned away at Belizean immigration, so when we return this summer, I will again be sure she has the letter. Have a great trip. Sam