I am booked to fly from Frankfurt, Germany, to Charlotte, NC and then on to Atlanta, GA. I have friends who would come and pick me up in Charlotte, saving me a lot of time for getting home. I have to pick up my luggage in Charlotte in order to clear customs and would have to recheck it for the last leg. Can I safely skip the last leg to Atlanta without having to worry about my frequent flier status or being charged any extra? I have never skipped a flight before.