Yea, take a long lens.
I shot her last week, we were stuck at the back of the standing area, next to the sound desk.
The sound desk guys were up on nice 2' tall risers.
We were all standing at ground level, so my first few frames have the bottom half obscured by glowing phone screens.
Cheers for the heads-up! I've hired a 120-300 for versatility's sake, it was either that or a 400/2.8 and I couldn't handle lugging that around.
" back of the venue on the floor just in front of the mixing desk. Bring a long lense" was the only indication of location, so I'm hoping it really isn't flat on the floor. I honestly don't know whether to be 'that guy' bringing a stepladder.