Originally Posted by
BigEyedFish
I find being nice to someone often works really well - as well as using a little humor..... 'I'll buy you a drink' or something similar (it's funny in business, and nice in coach)
Offering a bottle of something from the onboard duty free might be a less tacky way to sweeten the pot (could also be said humorously)...
Barring that, just be nice and offer to trade down. Even if you have two window seats, offering forward or backward as appropriate (opposite of FEBO).