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Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
Absolutely. The final tiebreaker is time of upgrade request. Check in time has no effect on upgrades on DL (of course unless you miss your check in deadline and are offloaded from the flight).