I agree that the audience makes a difference. I don't know this from first-hand experience, but I hear it from my husband (he's an opera singer) all the time. For full-scale operas, he says it doesn't make a difference but when he does smaller scale concerts, it definitely does. He, however, has a way of bringing the audience out of their shells. So, some of the responsibility of getting the audience involved lies with the performers.
I will have to say it's hard to be enthusiastic when the performers aren't, well...very good. And the last crew I saw at FOTLK...they weren't very good. The singing especially. Unless you knew the words, you couldn't understand them..their diction was horrific. And they were so into ornamentation of the song that it took away from it.
On the other hand, I can't imagine these people working 6 days a week for $6 - $7 a hour in the heat, the humidity and then at the end of the week not having enough money in their paycheck to live. It's ridiculous and I think Disney needs to pay more and that will translate into better performers.
Now, I'm not bashing all of the shows at Disney. I'm talking specificially about FOTLK. I guess I'm sensitive to this because it was our favorite show. The performers around World Showcase are fabulous and very good at getting people involved. Of course, they perform 10 or 15 minutes. Indiana Jones...I've noticed no decline. The Dapper Dans on Main Street are absolutely FABULOUS. I can't imagine strolling down Main Street and not hearing them.
PamNC