Nah I know it isn't the cards fault, cause I just lose them altogether. Then I just wander around until someone lets me in their room
Carol and I were on the third floor, directly above Vince & Wendy, and you or Vince switched our Cougar Den door sign to the second floor one night and I went all the way back to the desk because my key for the wrong room didn't work.
Last year I made our bed dance all over the room just from the motion. It was hard to keep it in one place. So yes I agree the floors are very slippery.