@OmSigDAVID,
So then if you go to the movies, you pay the 15 bucks for a large tub of popcorn and of course the large soft drink (or water) and start watching the movie. If you drink this whole Large drink and then half way through the movie you have to get up and go to the bathroom, do you feel you should get a refund for the time you were in the bathroom? Seeing as how it was THEIR soda that did you in and made you miss that portion of the film?