I'm thinking that Collingwood Ontario would be the best place to get race boots. Any recommendations on a good bootfitter in the Collingwood area who understands the needs race equipement (especially for kids)
Shane at Squire John's is also highly recommended.
If you're in Toronto, Skiis & Biikes has good fitters in their Don Mills & Mississauga stores as well, so they can get you off to a good start. Then you can visit their Collingwood store for adjustments when you're skiing up north.
Whichever store you visit, call ahead for an appointment, and plan on an hour per child for an initial visit. It can be better to fit each child separately if you have the time, but understandably this isn't always practical, especially if the shop is a bit of a drive for you to get to.
The 13-year old could be ready for footbeds, so allow more time (and a followup visit) for that part of the fitting process.