Oh thank you for the link.

Says "Ticket status: e-ticket processed 02MAR18" in one line. Should it be considered as confirmed?

It does not give me any order number though, just e ticket number. Looking at the JAL page it seems I need to produce the e ticket receipt or order number to check in. Not mentioning what should be on the receipt though...

But I wonder if the flight is cancelled due to weather, one is said to call JAL for rebooking but not sure if I need the order number for that...