I can't help with specifics for West Yellowstone, but I know that the park we stay at each spring at the North Entrance has complained for years that the concessionaires repeatedly hire people without telling them that housing and RV spaces are almost non-existent for those employees. They field dozens of requests for seasonal sites and the conversation ends when they explain that a seasonal site would be $1350.00 per month, if they had one to rent. Monthly rents for RV spaces near Yellowstone often run in excess of $1000, often well in excess. That puts it out of reach for the vast majority of workers. The trick is to get either an employee site provided or be placed at one of the parks where the concessionaires pay a large portion of the rent. That needs to be done upfront, I have never heard of anyone who got a site tossed in after they took a position. This thread needs to be a cautionary tale for people seeking seasonal positions at Yellowstone. Make sure housing or an RV site allowance is part of the compensation.