I, too, look at wall paper gigs as paid rehearsals. If I know what it is upfront, I charge a good buck and figure I'll stay home if they can't come up with it. Susan and I did a couple St. patrick's day gigs for a pub, where they paid well, but no paid attention. We did get compliments from some people. However, when they didn't ask us this year, we weren't heartbroken.