OK, I'll amend my previous comment as follows:
Before takeoff, ask the flight crew if they care if OP and wife switch seats,
AND
Before trip, ask the company if they care if OP and wife switch seats. E.g., "my wife/ SO/friend/companion is coming along (in coach) at no extra cost. Any objections if we swap seats?"
If neither cares whether OP makes the switch, then do it. Or not.
And, I still don't care.