I would shell out $80 - $100 bucks just to see a band I love open (probably wouldn't travel far enough to stay over for it, tho). And if people are tailgating - more room at the front for everyone else. GPN opened for Avett Brothers last year and played an hour. Here's a link to that audio: http://www.archive.org/details/GPN2011-04-09?

Regarding missing the intimate venue experience, there are some amazing newcomers out there who are struggling along in the small venues - spread the love around.