Originally Posted by suecate
anyone know if you can pick up car in cancun drop off in chetumal and then on the way back pick up in chetumal and drop off in cancun?

Check with Europcar:

They are located at Cancun airport and Chetumal.
In Chetumal, the Europcar Central office is located on Av. Heroes, across the street from Hotel Los Cocos, and I think they are also located at the airport. They have cars that are allowed into Belize.