They have as much right to enter the park as anyone---but ON FOOT. Maybe a guy wants to fly in on a helicopter? Sure, let's open it up to him. Maybe a group wants to come in on ATVs? Sure, why not? How about a guy in a jet pack? Why not? Why not 200 Harleys w/o mufflers? Sure, it's their god-given right. Snowmobiles sound excellent. Bring 'em in. Who cares about a little noise pollution? Open it up to gopro personal drones and people won't even have to leave their cars to see the next mountain range.