Originally Posted by
cfischer
W --> O on AF is actually not bad at all. YBM --> Z at the airport is working as well. Of course MBYW is an issue but from there I have been rather lucky getting the UG
I would never call using a SWU on Delta "easy".
Easy is booking a fare, and upgrading if available. Not easy is making sure I book a specific fare class, but only dropping that chunk of change instead of buying any fare class if upgrade space is available, because who knows what will happen.
Seems the best for Delta, though, and they need to stay afloat somehow.