I was at our local NC production yesterday (dress rehearsal), but ended up just taking video with the R3. I don't do much of that so it was a bit of a learning experience. I had the same two lenses; 70 was just about the right focal length so I used the 24-70 and could then zoom out for more context if I wanted.
I found there's a BIG difference in illumination from one spot on the stage to another. I went manual exposure so I didn't get a lot of swinging, but I was constantly adjusting. And the color temp is very warm.