黃石旅館：48 hr cancellation policy

i.e. cancellation 48 hours before arrival, full refund. Otherwise 1 night charge.

Please note : it usually means backward counting from 18:00 on arrival date. I have not read the finer details as I know if I need to cancell most likely would be much earlier than 2 days.

Already cancelled one booking and rebooked another.

Teton lodging is not operated by the same concession service (they also operate Grand Canyon location) Teton seems to have several high class resort hotels plus some lower end lodging that are all run independently.