I have to agree with DKA - Journey. But mine was 25 years ago. The only other ROCK concert I've seen in a venue was Bryan Adams (Pensacola, early 1992, the week before I found out I was expecting, worried Wes would be born deaf).
Have seen Beach Boys at Sandestin, Wet Willie (1970's) at the PC Civic Center, and J. Geils Band, and KC/Sunshine Band at Miracle Strip (may its memory rest in peace). Also - not rock, but Hank Jr. east of Freeport in 1982. Anyone else local remember that?
I tried to go to Elton in '96 in Tallahassee, but couldn't find anyone to go with me. I wish SoWal had been around then.
Despite all this, the BEST concert I've ever been to, and I was standing behind a support post in the top of the Leon Co Civic Center, behind the stage, was NOT a rock concert. It was Garth Brooks. And I don't even care for him anymore.