Excellent, that's already equalled the Gwen Gof Uchaf Easter 2005 Experience Meet then!
Mad Jim's suggested these options, which sound fine to me:-
Umm, there's a bunkhouse at the Bridge of Orchy
Hotel I think. Or you can wild camp by the river. Nearest proper campsites I can think of are in Tyndrum and Glencoe.There's a sort of approved wild camping spot at about NN 270 413, just west of the Inveroran Hotel, where you
can wild camp but still have a nice hot meal every night. The hotel's not run by the most cheerful of people but it does the job. That's what I'd recommend.
So the choice is between campsite in Tyndrum and wild camping + bunkhouse in Bridge of Orchy. In case anyone's worried I won't be using the bunkhouse.