We've got a big tip that you could get you a lot of winks from flight attendants, both male and female, if you're interested. Here's the tip: bring chocolate, specifically individual chocolate bars or a box of truffles. When you board and when most everyone's seated and the flight attendants are doing their seatbelt checks, hand it to one of them as a nice little gift for the flight's crew.
Not only are you more than a considerate human being, but you'll likely make their day, a day they may otherwise spend thinking about the raw deal they have working when they'd rather spend the weekend with their sweeties.
We typically bring boxes of Vosges Exotic Chocolate Bars onto our long-hauls, simply because we like flight attendants and umm...yeah...they are responsible for our life. The key is not to expect anything in return, although at the very least you'll get several personal thank-yous.
On one flight on a 747, every single crew member (okay, maybe not the co-pilot, but definitely the captain) walked all the way back to us to say thanks, and to share which flavor they had tried. The $25 box of exotic chocolate bars are miniature and inspired by travel with unique ingredients, so they really appeal to foodies...and flight attendants who jet to many different countries. Ah yes, and there've been upgrades and in-flight amenity kits and free drinks, too *wink*.
We pick up our boxes of Vosges at their store in Soho, and when the FAs ask us where we get these, they're happy to hear they can just hop down there and grab some themselves. No, we're not shilling for Vosges at all; this is just a gesture we really believe in.
The Vosges chocolate bars
[Photos: Vosges Chocolatier]