I was told the same thing, not in the budget this year apparently, not even an audio pool feed and same might be the case at GTR.
My advice then to those filming from the stands is use a tripod no matter what and if you have a directional mic on some kind of pivoting mount so that it stays pointed at the speakers hanging from the ceiling and that should help a bit with the audio.
I miss the audio feed, I always plugged into it and set it to channel two in my camera/headset and had it up loud just so I could enjoy the music while I was there for the day extra loud.