Check out the trolley system in Savannah. Can get pass that allows you to get on and off at the places on the tour. All you do is get off and walk around the area then when ready get back on the trolley and continue to the next historic stop. We have done it twice and worked real well. If you do, keep your passes and if you go to St Augustine and show the trolley there your stubs, you will get a discount. Also, while in Savannah if you have time, check out the Crab Shack. It is on the way to Tybee Island on the right side. Good Food. Have fun and a safe Merry Christmas.