After spending a number of days exploring the Cayo (staying just outside San Ignacio), we intend to travel to Ambergris Caye for a few days. We intend to fly from Belmopan to San Pedro via Tropic Air. Is it recommended to purchase advance tickets? Can wemerely arrive in Belmopan and jump on a plane? There are 2 of us, and I like to stay flexible, but not get caught short. Any and all advice/input is much appreciated!