I have just arrived back this morning from US27 'Hamptons Lake' and cant say I noticed any atm's locally, However I never needed one so wasnt looking. There are loads available in the parks and most places (even mcdonalds & wendys) take credit card.
If you use cc for cash withdrawals you will be charged to withdraw like over here would advise use cc in shops ect you only can get cash out without charges using the debit card
Paulh