a friend and I have booked flights US-FRA-ARN. Vacation.

FRA-ARN served by SAS on A320. That flight, according to the itinerary, is booked in booking class Z and named SAS Plus.

From what I can read, SAS Plus (intra-European business class) only benefit seems to be seating near the front of the aircraft. Is that correct?

I'm booked into 3A and my friend 3B. Otherwise, this flight in June appears to be almost empty. Does SAS not keep at least the center seat vacant, like LH on their intra-European flights!