Originally Posted by
cooleddie
Thank you all. My flight arrives at 520 and leaves at 1400.
I'm hoping to catch up with a friend for breakfast somewhere close to the RER line.
That's why it's be nice to be able to grab a quick shower upon arrival
I've done the exit re-entry on connecting boarding passes in LHR, FRA and HND with no issues in the past

You need to shower before meeting a "friend"? That must be a very "close" friend.