They never have seats available for upgrades! I even try like six montths or more in advace and NADA! And to add insult to injury they have this outrageously expensive co-pay that costs too much. I bought a coach class ticket R/T GIG/DFW/GIG for $1,300.00 and they want $1,400.00 co-pay for an upgrade! Give us a break! I have over 600,000 mikes that I cannot use! I also have 92 500-mike upgrades but tgey are only valid in the US and neighboring countries. I never travel domestically so I cannot use them ever!