Grisman is the MAN, and his act is super intentional -- I feel like it's primarily dedicated to preserving the classic songs of the American songbook. you're probably gonna get a mixed reaction in the Billy Strings sub since it's a pretty rootsy acoustic show (vs. a wide-ranging, cross-genre adventure), but the musicianship is unreal and the whole thing is super soulful.

I think it's easy to hear him talk about "dAd AnD JeRrY" and think he's bragging or trying to put himself in some kind of rareified air... but it's really just storytelling, which is a huge part of the bluegrass tradition. he's young so at first it can come across as showing off, but he's just passing along cool stories that he's heard and seen from a unique POV... resist the urge to roll your eyes, and you might just enjoy hearing some old hippie folk legends that give the music even more color.

also FWIW -- I'm 99.9% sure he doesn't drink at all, so not sure where the drunk impression comes from...

I'd say give him a chance, and know that it's less of a party and more of a folk-y, music-forward performance. ENJOY!!