As discussed at class last night, I'm in the process of seeing if I can find another venue on a Wednesday, just for those three weeks. My goal is to not cancel the class, but to move the day as a one off (well, a three off I suppose). I am aware that this won't be possible for everyone, but it's the best I can do.
As for the roda, here is Mestre Ray and Mestra Onça. I especially like how about half way in, you can see the game has clearly started, even before they crouch down to re-enter the roda. A nice reminder that as soon as you go into a roda, the game is on!