Went to Glacier NP last year tent camping. Pulled up to the entrance gate and the sign said all the campgrounds were full. Decided to drive on anyways and found this was a total lie. Some of the campgrounds were nearly empty. Called the park service and was told they "estimate" capacity to prevent people from driving all the way back to an empty campsite. At the end of the season read an article saying Glacier campnight stays were down 4% and the park service could not figure out why!! Gov'ment agencies are not the best managers of businesses and campgrounds are a business.