You can purchase most things in U.S. dollars - but there is a severe scarcity of $1 bills.

Bring a large stack of U.S. $1 bills with you, so purchases and tipping, cab rides, snacks, will be easier - plus it will help the local economy to have more bills for use in making change.

Even the front desk of major hotels and cashiers at the casino may not have small bills; they often resort to asking around the members of the staff for change.

Do yourself and the local merchants a big favor and bring $1 bills with you.