
The barn door is shut, but for future reference:
1. $633 is about the best you can expect to do.
5. The rental cars all say they come with unlimited mileage, but they used to have some kind of gimmick that could tell if you had gone to Yellowstone, in which case all bets were off. Maybe they have done away with that. Rental rates are about $260/week plus tax, but you can get than down to about $150 on hotwire.com.
6. Be prepared for a jarring flight. Every time we flew into Bozeman we thought the wings were going to fall off.