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
I'm a believer in bringing a printout too.
Some conference blocks seem to be done through online reservations using passkey. Their pages look very much like Hyatt, Marriott, or whatever, so if one clicks on a link from a conference website or email, it would be very easy to miss the fact that this seems to be a third party.