I've booked a SAS flight to Stockholm on a BMI flight code (over £200 cheaper than the same flights on SAS codes). The flight leaves at 6.45am on Tuesday 9th November. I've tried to check-in online (on the SAS web site) but have been told that I can't as I'm booked on a BMI code.

Is this true? Is there any other way of checking in before arriving at the airport tomorrow morning?

One other question. I've *A and BMI upgrade vouchers (from the matching BA offer). Can I use them on this flight?

Thanks