Yes you can cash Travelers checks at the banks if you want to stand in line for an hour. Cash your checks at one of the cambios around town. There is one in front of Bourbon Beach. One across from the Burger King downtown. And the one I always use is the FX Trader next to the HiLo at Sunshine Plaza. I think there is also one on the west end but I'm not sure where as I haven't used it.