Just the smell of that many mice alone is enough to make me not want to be there. We caught the end of the plague back in 2011, and I couldn't even go into the petrol station at Erldunda due to the stench. There were dead mice all over the ground, and a few live ones still running under cubicles in the toilets.
Our friends were caught at Kings Canyon in the thick of it, and couldn't put their feet down without standing on one. They sat around the fire with their feet up on their chairs, and they even had to set traps in the car as a mouse had run up the driver's leg while he was driving. It took several days to catch it.
I'm with the others. If it's really going to be that bad, I couldn't think of anything worse than camping in a mouse plague. I'd go somewhere else if you have the option, otherwise...good luck!
Karen