My fiancee August and I live in Dahlonega, GA. The only grocery store within a 30 minute drive is the local Super Walmart.
What about the Krogers in Dawsonville or Gainsville? Those should be about 25-30 min away from Dahlonega according to Google Maps.
It's a shame you don't have a Bi-Lo nearby, They use their store brand of bread as a loss leader and its surprisingly good, especially for only $1/loaf. Walmart is surprisingly not a good store if you're trying to save money on groceries as they rarely have loss leaders you can load up on. If it's something that doesn't usually get put on sale at any store, they often have the best price, but loading up on sale priced items at Walmart just isn't an option.