A FlyerTalk Posting Legend
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: 100,417
Remember that there's a difference between a day pass (good for multiple lounges on the same travel day) and a SC single entrance.
Also, most AmEx nonaffiliated Plat and Centurion charge cards allow SC entrance for free when traveling on DL that day.