Incase you are having problems finding camp sites which will take tents have a look here http://www.scottishcampingguide.com/index.php it also lists sites which have now closed, although a negative it's useful to know.

Will this help me find the Braemar campsite when I fall out of The Fife Arms at midnight?

if you do that ,i think it's taken for granted you're on your own and do not require assistance.