Is there an RV Park close bu to use?

Yes but I'm sure people book them a year in advance

Yes

West Glacier RV Park is heard to be a great RV spot!!

We stayed at the KOA as well. Also big-rig friendly (just in case you have a larger RV).

We boondock it so we just stayed in a pull out along the river, tucked in the trees.

Multitudes

We stayed at Glacier Peaks RV in Columbia Falls.

We used the KOA about 5 min from the west entrance, we did see a lot of signs for other RV parks!