I've never encountered a bad car attendant on the AT, so I'm sure that you'll see your's more than once. The AT crews don't come from the normal pool of Amtrak employees and operate under a different contract. For that reason Amtrak has been able to gather some of the best crews in its system on the AT.We are downstairs on both legs (13 & 14 southbound and the family bedroom north) so the population of passengers should be low. We probably will never see the car attendant, but at least it should be quiet.
In fact the best attendant that I've ever had was one that I encountered on the Auto Train.