It does have the connotation of someone who gets wasted and parties while attending these festivals, but the overall meaning is based on simply frequenting festivals.
"So you said Steve might be coming to forest this year?"
"Yeah, but I don't think it's gonna happen, he's not much of a festie."
A term used by the most upscale hookers of America.
To be a very good Ho, Call-Girl, or Escort.
The term used by "Kristen" AKA Ashley Alexandra Dupre, a Call Girl from New Yorks Emperors Club, to describe herself and her behavior in a recent interview.
Mack: Hey Mercedes, aren't you a little worried about your job as an escort?
Mercedes: No. Not really. I know what I'm doing. I'm a Ho-Fessional.