After not getting a reservation to Going to the Sun Road for the first day of our trip, we decided to go to the East Side of Glacier for the day where no reservations are required. We did a little research before heading to the campground for the night. It historically doesn’t fill all the way up. You cannot reserve a spot online— it’s just first come, first serve. We pulled in around 7:00pm and there were still quite a few spots. (For reference.. this was a Friday night on the last week of a July— so during busy season.) $20/night. Bathrooms are available. The lake is BEAUTIFUL. I highly recommend watching the sunrise from the benches around the lake. A colder night because of the proximity to water but a beautiful site. Would absolutely recommend to everyone visiting Glacier!!