I've actually started animating 8D
I've got 24 seconds finnished and rendered out - I'm well chuffed :D What I've got so far is in slow motion however, so the amount of movement is fairly limited - their are 4 characters in the scene though. The real test will come from the second half of the animation, which I haven't started yet - It'll playback at ordinary speed so any errors will stick out a mile.
I'll have plenty of time to rudement on it and fix things though - I had budgeted for it to take weeks for me to get this much done and its only taken me three days XD Thiers still time for the realtime section to bone me in the ass, of course.