For those of you who haven't been to a convention in awhile, it should be noted that the WT Society no longer provides food - we have to bring our own (at least that's the way it is in U.S.). So they're not making a whole lot of money from the food angle anymore.
On the other hand, for some, those food vendors come in really handy, particularly when you're far from home, living in a motel/hotel, possibly without a car to run out and pick up a hoagie at the 7/11 to take into the convention ... or are getting woozie or sick and need something in your stomach ... or have a kid kicking up a real fuss b/c he's hungry ... or just plain didn't have time to pack a book bag -- and food pack -- and cooler -- AND still keep up with your daily Bible reading and reviewing the day's highlights with your family.