Originally Posted by vinnmann
1. You should be able to let anyone use them.
2. YBM only. Note that A fares often cost less than YBM.
In short, don't waste miles on these types of upgrades. Just buy an A fare. Also, note that there is often no availability in the mileage upgrade buckets, even when there is in the complimentary Medallion upgrade bucket.
True in theory I agree...what stinks though is that I very rarely will get a YBM fare but I cannot actually purchase an A fare except for extreme circumstances due to my status on the totem pole

. Occasionally it would be nice to have this flexibility to purchase an upgrade with miles. Oh well for longer domestic I will just keep traveling on the weekends!!!