mamajack: I'll have to look into the Stephenville festival. We've gone to Kerrville (heck, we got married there!) but haven't been for a few years. I guess since we're getting older, we might find that fest better again.
ACL Festival and the PBS show are two different things. Some of the acts from the festival will do tapings for the TV show, but only a select few. We went to a taping before they moved into their new building (which has a much larger seating and standing area than the old) for Steve Martin (yes, the actor, who is also a phenomenal bluegrass artist). Those were free tickets only, and given to donors or to people selected by a small contest. The tickets are now for purchase, but very reasonable prices. A much better option, as true fans almost never got into the tapings previously, as they were reserved for donors.