In Kyrgyzstan, Kazakhstan, Tajikistan, Uzbekistan and Turkmenistan cash is king. You should bring enough US Dollars with you to change into local currency once on the ground in your destination. Your trip leader will make stops at banks or money exchanges frequently for the group to exchange money. ATM’s in these countries do not work with foreign cards. Credit cards are accepted in large cities. In Georgia, Armenia and Turkey ATM’s work with foreign cards and credit cards are widely accepted.