Takes me two weeks of continuous games to get bored of playing a player (Trust me, you can ask Kirah how many games we've played - yet we still go full game days.)
A rotation is nice if we can all get together for more game time, but if not we'll all see each other at the event anyway.
I don't mind doing like ft100-ft200's though. I just want to play. It's true after 3-6 hours the autopiloting sets in and the mind gets tired if you're playing right, that's when you just need to take a 20 minute break and stop playing stupid. The one benefit of a small rotation is you don't really have to stand up because other players are waiting to play, though.