Join Date: Oct 2005
Location: Ponte Vedra Beach, FL
Programs: DL PM, HH Diamond, Fairmont Prem, SPG Gold, Priority Club Plat/IC Amb, AmEx Plat
Posts: 10,839
If DL believes that they can sell the F seats, they will hold back those seats (sometimes some, sometimes all) for sale. Upgrades can clear at any time during your window.