They are bringing you a letter to take back to the states when they arrive in PV ( Rey talked to your Admiral ). Chuck is the manager of Bocas Marina where we have the boat. You might know them. They have a Spindrift 43 and Chuck was the Harbor Master at 'Twin Harbors' Catalina for a few years before they left and headed south.
I told Ann about your 'rum tank'. She might have been kidding but she said "I think we know them".
Photo Chuck & Ann on right.