[honeychile]

The entire concept of etiquette, good manners, class - whatever you want to call it - is to conduct yourself in a way to make others more comfortable and to make yourself more likeable.

If you buy something to eat from a street vendor, fine. Find a bench, a wall, or someplace to stand and enjoy it - no one's saying you can't! But, if you decide to stroll while eating your taco, hot dog, coke, cotton candy, or whatever, think of what can happen. The crowd might be flowing just fine, until there's an obstacle. Then everyone stops suddenly - and the person in front of you is now wearing your ice cream, or whatever. Is that fair? Would you want that to happen to you? What if the person in front of you discovers that the pizza he just had sat out for too long and his stomach rebels before he can get to a inconspicuous spot? Do you want to deal with his upchuck?

Artists at street fairs aren't exactly thrilled to find mustard or cotton candy on their wares, either.

Same with smoking - I can't possibly be the only nonsmoker who has a burn mark from a wildly gesticulating smoker, whose lit ash landed on someone's clothing or skin. What if it had landed in someone's hair, especially in the highly lacquered big hair days? Do you want to be responsible for someone's disfigurement?

I could go on and on, but you're intelligent adults - figure it out for yourselves.