Partner and I booked X SEA-KOA with no seat assignment at time of booking. 6.5 hour flight I was awfully tempted to upgrade to PC, if only for the extra legroom and to get in front of the line for car rentals. AS wanted $169 each - pass.
To my surprise, we were both upgraded to PC during online check-in, despite plenty of regular seats being available near the back. Cool.
No status, though this flight will put me over to MVP for the first time.