The use of the word plaid, unless it's a Heilander' describing his blanket, usually means USA, but I think this webpage might give a clue. It describes it as "distinctively Scottish – American", so for us over here I guess that means American.
The rest of the page has touches I have never heard of, while ignoring actual Scottish tradition.
The tune St Kilda wedding is a very old reel, rarely heard nowadays, the "traditional wedding reel" Richie na Bainnse, I've never heard of. I'd presume they mean Dùsgadh Fir na Bainnse, (The Waking of the Bridegroom), but that's not a reel, it's a fairly obscure piobaireachd from Glen's collection of the late 1800's. I can't help but get the feel that someone is making it up as they go along.......................