The camp host will typically be on site all summer, and will keep their vehicle(s) on the gravel pad.
RV/Vehicle Camping Alternatives:
For those wishing to vehicle camp, there are commercial RV camp facilities nearby in addition to those in Glacier National Park:
West Glacier KOA: https://koa.com/campgrounds/west-glacier/
West Glacier RV Park and Cabins: https://www.glacierparkcollection.com/lodging/west-glacier-rv-park/
Moose Creek RV Resort and B&B: https://moosecreekrv.com
Lake Five Resort: http://www.lakefiveresort.com
North American RV Park and Yurt Village: http://www.northamericanrvpark.com