Whereabouts? Linn of Dee carpark is pretty safe, complete with eco-toilet, though good boys pay the £2 they ask. There's a (free I'm pretty sure) carpark in Braemar itself, and space outside the hotels. The Youth Hostel carpark (just by the Mountain Rescue) is another candidate. A lot depends where you are heading, and whether on bike or foot.
Edited: 18/06/2008 at 11:50