For better or worse, Amtrak is not an option where I live (Tallahassee). We used to have the 3/wk Sunset Limited, but that disappeared with Hurricane Katrina--and never came back.

So you really think the TSA and Savannah police would be able/willing to coordinate with another police department somewhere else to meet you as you get off the train, simply because of a last-minute decision to visit another city?

Maybe we should start a sticky of US train and bus stations where you can expect to find TSA and CBP waiting for you.