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: 102,617
There's a PGA lounge across from Escape that accepts PP but I don't know whether it has showers.
Escape (AmEx Plat/Centurion cards) not only has no showers but lavatories outside and down the hall.
The UA lounge is far too small for either showers or lavatories.
All of these are airside in T1 (DL, etc.) as are the two DL SCs. Neither has showers, but the C SC does have a clothes changing room (without running water).