When we travelled through there in 2010, we stayed just outside the park in
La Wis Wis Campground. It is a beautiful camground tucked tightly into large trees. As the page at link above says, "La Wis Wis is ideal for tents, car campers and truck campers with a slide-in".
Paradise is gorgeous (hence the name).
We stopped along the one-way loop road on the way down to take this picture:
and this guy (a red fox) came sneaking down from the snowfields:
These people didn't even notice when he went for the bridge crossing: