Perhaps air or fan dry hair, then follow up with butane curling iron or rollers with hair spray or styling gel, or use plastic rollers heated in boiling water. Try a trip to the washroom or nearby post or outlet, even a pavillion, for electricity.
You don't need electricity or a generator to dry your hair or make your coffee. Trailering is all about adaptivity. Throw caution to the wind, or your hair
It will dry. Towel dry it and maybe comb it longer. Be creative, perhaps a new "do" is imminent. I can still remember relocating a woman's rally because someone had to blow dry their coiffure.