My flight from Muscat to Amsterdam was a night flight and the flight attendants disappeared for hours. I got very dehydrated and needed water. I suggest water is given out to those who want it before passengers go to sleep. I have been traveling on long haul flights for over 45 years and have always loved Schipol Airport. It has only got better. Congratulations to the Dutch for their efficient organization and security measures. It's the best airport in this respect.