Like I said before, without tax documents, they missed out on free dental insurance from the federal government. Do they don't have health records or visit record from their family doctor and dentist?
Not sure why you add me into this discussion. Nor do I want to read anything wrote by you. Back to the topic, would you rather suggest OP to take YYZ or any other port of entry?
Shouldn't you be in contact the embassy, high commission, or consulate of the country where you plan to get married to determine about what documents you will need?