We just left Death Valley (heading for Grand Canyon for winter camping) after visiting the park for a few days. Yesterday we did a 4 hour hike with a couple of Nature Rangers, one seasonal and one full time. Both were concerned about the hiring freeze. Most National parks couldn't function without seasonal hirings. It's true that the concessions are farmed out but park services employe many government people that are vital for the parks to function.
We are taking off to Alaska in late May for the summer. Our visit includes national parks. Hopefully none of the national parks anywhere in the US will be affected. Our parks are our national treasures and truly one of the things that make America truly spectacular for us and visitors from all over the world.
