I was a victim of a pickpocket while traveling standing up on a crowded train from Pisa to Florence in 1981, with a loss of all my Travellers Cheques.
And yep, it happened on a Friday, but before I was aware of the loss, the Banks had already closed for the weekend. After waiting for a couple of hours at a police station to report the loss, a necessity before a refund can be claimed, I literally had to live off the goodness of the owner of the pensione (a hotel where guests share a single sex dormitory) I was staying in.
After the refund I eventually got on the Monday, on top of the normal hotel bill, I had to pay for all the sustenence I received over the weekend.