Southerners shouldn't worry about temps, right?

[themousetrap]

Those of us who are vacationing to WDW from the Deep South (LA, MS, AL, GA, Carolinas) shouldn't really be concerned about "hot" temperatures, right? I mean, if you live in the DeSo where the temp is a constant 90+ degrees with over 70% humidity and 70's at night, going to the same thing in FL...should it really be a surprise?

I'm not trying to be sarcastic or anything, because the heat in the midwest is a whole different heat than the DeSo (we've never had a killer heat wave down here), so is there something about the FL heat that catches people off guard or is it just people not used to it?