Karen, As I went during the time of paid excursions, I can a tell you about 2 ports were we took Regent day trips.

Belize- We originally signed up for Absolute Belize. Due to high winds it was canceled and we took, Airboat Adventure and Belize City Tour. The city tour was not much as the town is poor. The airboat adventure was interesting as we were taken around a huge lake system and saw lots of animals.

Santo Tomas- We took the Countryside and Rio Dulce By Land trip. Really good. I loved seeing the countryside as we road to Rio Dulce. The ride around Lake Izabal was fascinating and the fort was a nice break up to walk around. Some shopping available.