The other hotel room trick is to run the shower as hot as it will go with the bathroom door open, both before bed and upon waking up, which gives you a burst of humidity to cushion your night breathing and one to combat waking up in hotel air.

Alas, I will not be at the con. A roommate did not materialize, and I am instead going to be here. Have a fabulous time! I hope your voice does not decide to do a Peter Pan's shadow and go walkabout.