What are the visa requirements for returning to Thailand after a short stay abroad on a Non-O visa?

Assuming you do not have your own Thai Bank Account in your name only now, then you can only get the Non–O E–Visa Married to Thai Wife from the Thai Embassy in Ottawa or Thai Consulate in Vancouver that has 90 Days Stay inside Thailand

since you don't have a Thai Bank Account, you can only get a Non–O E–Visa Married to a Thai Wife outside Thailand that gives 90 Days Stay

Now, you can also get an in–country Extension of Stay from your local Thai Immigration Office inside Thailand based on « Visiting Thai Wife/Thai Spouse/Thai Child/Thai Family » that has 60 Days Stay inside Thailand

Extensions from your local Thai Immigration Office can only be obtained inside Thailand

Do you already have a Thai Marriage Certificate or Thai Marriage Registration issued from a local District Office inside Thailand?? or, do you only have your Canadian Marriage Certificate now??

if you already have a Thai Marriage Certificate ( คร.2 ) or have a Thai Marriage Registration of your Foreign (Canadian) Marriage Certificate ( คร.22 ), then great

Country of passport? Age? Criminal record?

Better come with an evisa Serge as they have tightened entry rules for a 60-day VISA EXEMPT Serge Laplante

Crazy - Imagine you’re married to a Thai citizen and get only 60 or 90 day visa and then leave 🙈🤮

You do know that the Marriage Visa is a 90 day Non-O Visa not the standard 60 day entry visa don't you?

The 90 day Non-O visa based on marriage gets you stamped in for 90 days as the name suggests. There are only 2 extension options available to you

1. A 60 day extension based on "visiting Thai family", it just so happens in this case your family is your wife.

2. A 12 month extension of stay based on marriage. For this you need to open a Thai bank account and deposit a minimum of 400k baht which must be seasoned in the account for 2 months before you can apply for the extension