Does CATS count? If so, then I went once to Atlanta in 2001. Twice to Charleston -- 2003 - 04, and once to Hershey in '05!
The one in Atlanta was huge... people were passing out small samples, needle cases, packs of needles, free charts... loved it.
Got kidnapped by Saddeeky and taken to Charleston in 2003 -- My DD, Saddeeky, our late friend Carolyn, and me. We had a ball.
Charleston '03 -- that one was the best one of all!