You will be slammed with requests. The person who has the absolutely best record with trading, dealing with, or finding tickets would be Debbie-form-Tuscon. She would never screw anyone over. I know this from dealing with her for more than a couple of years. She is known as the ticket Goddess, and for very good reason. Don't believe just me, ask around here on the forum. Not telling you not to trust another festivarian at all. Like I said Debbie has really helped me out.
Debbie has helped me out many times in the past and has become a close, personal friend of mine. That being said, if you don't go through her (or anyone else with a reference list as long as Wikipedia's list of bluegrass bands
http://en.wikipedia.org/wiki/List_of_bluegrass_bands), make sure you do not make a deal with anyone unwilling to make a three way phone call to Planet Bluegrass to change the name on the ticket. In the past, they have always been willing to sit in on these calls to make sure everyone feels satisfied that the tickets have changed hands as will the money.
These guys really do go about and beyond the call of duty for us as festivarians. They deserve more than our thanks, but I'm not sure what that would be . . .
Listening to:
Lil Smokies