I still at hotel rooms I do this one sort of not-so-cool thing: continually shoving my room service tray in front of someone else's door. Because I don't want the remnants. I don't want to be caught like being like the pig that I was at two in the morning.
But I don't do the diet thing anymore. I'm a big believer in feeding your body what it needs. Deny yourself something and you're going to end up shoving your face full of it.