Royal retreat: Who's in and who's out at Balmoral Castle this summer?

Balmoral Castle, nestled in the heart of Scotland's picturesque Aberdeenshire, has long been a cherished retreat for the Royal Family, is being open to the public for the first time in history. CTV's royal commentator Afua Hagan looks at the history of this storied retreat as well as royals who will -- and won't -- make an appearance there this summer.