Most of the joints I play in have a "No Mustang Sally" rule. But I will not play "Stairway to Freebird" under any condition. I'll leave that to the experts.
I've played Freebird and Stairway to Heaven live on stage, back-to-back, in their entirety. Before it happened I would have said "no way", but our frontman pulled it off and it was a lot of fun! So we did it again another time. If you play anything with conviction, that gets you halfway there.