We are looking at booking a 7 night in Oct 04 and my twins will be 12. Is there a price difference between 11 and 12. Maybe I am looking for a goo reason to go in 03 instead of 04. Kinda a dumb question, but we want to make sure we aren't going to be paying a bunch more just because they're 12 and not 11. I think the adult would be 17 or 18 and over, but just checking. Thanks