that would be me. I don't sleep a lot most nights, and use plane time as sleep time. Yet even with all of those 'hints', I am often awoken by FAs or fellow passengers. I finally had to have 'a word' with a passenger who awoke me 3 or 4 times for drinks, pretzels, and a customs card (I travel with my own so don't even need to be awoken for one of those)