FlyerTalk Evangelist
Join Date: Nov 2000
Location: Nashville -Past DL Plat, FO, WN-CP, various hotel programs
Programs: DL-MM, AA, SW w/companion,HiltonDiamond, Hyatt PLat, IHF Plat, Miles and Points Seeker
Posts: 11,073
Delta Dollar$ are for use on a future DL ticket, which DL still gets you to fly with them again.
Also, don't count to heavy on the bump. Oversold flights are common, but actual bumps are less so.