I'm sorry, in what way is this a bad thing? If you're thirsty or want a snack in the parking lot, this is an upgrade for you. If you're neither thirsty nor hungry, it doesn't affect you in any way whatsoever. People think that whenever Disney does something that makes money, it's a bad thing. What they ignore is that in order for Disney to make money, someone has to be willing to pay for it. For someone to pay for it, they must want it. Ergo, Disney doesn't make money unless they're giving people what they want.
They probably aren't making anything off of this any way. If you want a soda and there's nobody in the parking lot, you're just going to buy when when you get into the park. This is a guest service play that actually cannibalizes existing sales.
You can thank the government for that, not Disney. OSHA and whatnot.