I think it is a big mistake. It costs us more to have public employees operate and maintain the Parks but I believe they do have the best interest of the parks, environment and public at heart. Opening it up to low bid "for profit" companies will turn the Parks into McParks with McServices and the public will ultimately end up with an McExperience. Take for instance the difference between freeway rest areas in WA (State Operated) comapred to CA (Contracted Services). In WA they are fairly clean, well kept grounds.... in CA they are worse than a crappy gas station, litter everywhere and grounds that are barely better than a vacant lot.
I think services in general at the parks will suffer, contractors will do the bare minimum or less.