Ruby Harris writes in response to
Though Shalt Not:If a musician is a mentch and a guest is a slob, the musician will be welcome and the guest will be rejected. If the musician is a slob then bureaus like this will write a set of rules, and thereby, be justified.
Unfortunately, you have to have rules as guidelines for those musicians who don’t have such great etiquette, so that the slobs are generally hidden, thereby avoiding embarrassment and a loss of future gigs. We’re not all Einsteins who could get away with unkempt haircuts.