Ordering Cinemaplex tickets without a Canadian number

I will be in Montreal in 3 weeks and wanted to go watch The Odyssey in IMAX 70mm but the website demands I have a Canadian number.

Is there a way to purchase without one? Would I ever need the phone number after purchasing? Because I've tried with some "temp Canadian number" website and it worked, I just don't know if I'll need the number later.

Also, is the IMAX 70mm theater in Scotia worth it? And is there a chance they will add more dates beyond mid-september? Because the seats right now aren't great.

Merci!