Get your passports for any American's that don't have them already.
If it's your first time into Canada and you have a DUI or DWI on your record there is a chance you will be denied entry. They are getting more relaxed now, but at one time Canadian Customs were very strict with this and would turn you around and send you back.
I so want to go to this and see the one area of my home province I haven't been to.
Sounds like a great time and I'll have tons of vacation time I have to burn up at the end of September.