"I've always been pretty well behaved, really, when I'm on duty," the rocker, who promised fans the show would be awesome, tells PEOPLE. He acknowledges he has earned a certain reputation for rowdiness, but says authorities and award show producers shouldn't be on high alert.
"I joked that the censors are going to be like Family Feud – hands are going to be on the buzzers all night," says the 39-year-old singer. "There have been moments [before], but those have usually involved too much alcohol."
Rock plans to turn heads in other ways. "My costume changes are going to be ridiculous," he says, before warning that "all the girls are on notice – Carrie Underwood, look out! I've got a whole team assembled scouring New York and L.A. for outfits."
The CMT Music Awards airs live Wednesday from Nashville at 8 p.m. EST on CMT.
Reporting by EILEEN FINAN