On a FR flight from TFS to NYO a few weeks ago when either pilot needed to take a leak, seat belt lights on, no cabin service and cc sits in the cockpit. That makes sure the forward toilet is clear and the CC in the cockpit can open door for returning pilot or call him in case PIC is incapacitated. If the airline that legacy carriers love to denigrate can do this, why not all airlines. I expect new JAR regs asap.