Reservations are available for group camping at Colter Bay and Gros Ventre campgrounds. The sites range in capacity from 10 to 100 people. Advance reservations are required and may be made through the Grand Teton Lodge Company at 307-543-3100. Winter Camping at Colter Bay. Primitive winter camping is allowed in the plowed parking lot adjacent to the Colter Bay Visitor Center for $5 per night from December 1 to April 15. Camp on the snow covering the parking lot. Pay at the self-pay station by the restroom.