I went to Six Flags in ATl for the first time in 15yrs last summer. It was still a fun place to go. It had changed alot most notably the surrounding neighborhoods off the exit.
As far as Gulf Coast I' reccomend The San Destin Hilton. Panama City is still the redneck riveria of hs students and college spring break. Destin has some clean beaches, great restraunts and is family friendly ie people with a little more income. If you haven't been to Orange Beach/Gulf shores in a while check it out, still a great family vacation spot. Gulf shores has the water park and the outlets at Foley, and the ferry from Dauphin Island to Fort Morgan.