<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by 44C:
To prevent people being woken up by FAs when they don't want to be, why don't they just give pax a sticker or similar that you could put on top of your seat to indicate you want to sleep?</font>
Because BA's staff are meant to be trained well enough that if you inform them of your wishes before going to sleep they will remember them well enough to leave you alone when needed.