Originally Posted by jiburi

A321 sometimes gets downgauged to A320 and one of B737 variants about one to two days prior to flight. Still, 2C/D and 1A/1F is reliably good on all mainline fleet but just be aware this might happen.

In an event of a downguaging, Avoid Row 4, as you may be removed from F and placed in Economy due to reduced F seats.

Jiburi