My family always budgets around $1,000 per person per 6 day trip. That includes food, airfare, hotel, park tickets, souvenirs, and transportation to/from the hotel. Having said that, I should note a couple of things -
1. We stay at Pop Century.
2. We tend to buy 10 day, park-hopper, no expiration tickets, and we only buy tickets every other trip. I guess that means that one trip is more than $1,000 and the next is less, but they average out to $1,000 apiece.
3. We live in the U. S., and you live in Canada, so your airfare to WDW is probably more expensive than ours is.
4. In terms of food budgeting, we put aside $30 per person per day. That includes breakfast at the hotel's cafeteria, 2 meals in a park (reasonably priced meals - we don't drink alcohol or buy big desserts), and probably a snack or two every day. We typically do one character meal per trip.
5. Do you buy pins before you leave? You can get good deals on sets of 10 from various sellers on Ebay. It saves a lot of money.
Hope this helps!

