Thailand?
An old couple won, and went to Colombia - they gave them a whole bunch of cruddy prizes to take home... trinkets, etc.
The trinkets were all filled to the brim with compressed cocaine. So when they arrived, the 'tour' picked them up and took them right to a 'photo session' with the trinkets, which were replaced with unfilled trinkets when the couple was enjoying lunch.
These folks were oblivious to the plot.