I don't think Avenue Q's ensemble has such a bad time. Aren't all of them understudies? Many of them are understudies for more than just 1 part, so they probably go on a fair amount of time.
*SPOILER*
and they do go on every night--in the audience during The Money Song.
*END SPOILER*
I'd hate to be in Wicked's ensemble. Imagine having friends and family constantly asking you for tickets/discounts if possible. I actually thought about this yesterday.
"If it walks like a Parks, if it wobbles like a Parks, then it's definitely fat and nobody loves it." --MA