not a dime. i have never been anywhere, and im from east tennessee, where i cant pay with my cc or dc. i carry my military id, dl, hg permit, and cc in a ID holder (found this thing in afghanistan @ the PX in Bagram) and will never carry another wallet.
Things must have changed since my last visit to the sandbox. We paid locals off with U.S. dollars on almost a daily basis in both Iraq and Afghanistan. We bought luxury items, like toilet paper and information/cooperation with cash.
Not only paying locals, but I don't think I saw any stores out in the mountains that took credit cards.