Over the years I've noticed a few things that seem to be common among gondoliers; one of them is a love for travel.
Some do the backpack-and-hostel thing, while others take a more formal approach.
Show me a room full of gondoliers, and I guarantee you that at least half of them have well-worn passports.
As we travel we see the world, gain invaluable experiences, and run the risk of losing some of their own valuables.
This article in Travel and Leisure is a great collection of tips and warnings, many of which I've seen or heard of happening in places other than the ones listed. I witnessed a variation of the "newspaper attack" once in Jamaica.
Read up, and enjoy your travels my friends.