While at Cozumel, forgot and used tap water while brushing my teeth. Survived.
On the island making purchases the locals use a calculator to show you the price in USD, any change you get is in Peso's. At the airport when purchasing refreshments, everyone is dumping the accumulated Peso change in the tip bottle at the cash register.
There is a Peruvian coin the size of a US quarter that I received in change here in US.(no idea of it's value) While in Cozumel I left it as part of a tip, it was accepted but I was given a stern look.
