if you are a first time flyer..then you wouldnt be aware of what happens onboard...ie seatbelt sign on at specific times,however this guy clerly had flown before and i agree with 13...should of gone b4 u got on! i believe the CP is totally in the right! during flight if the CP or FO needs the loo...our policy is tht there are minimum of 3 crew at door 1 and the seat belt sign is switched on! am sure that anyway SLF who wants to have a little moan and groan would be the first to complain if someone got into that flight deck - on or off the ground!