Me VS My Friend's Parents?

If you don't want to go then don't go. It really isn't that difficult. But personally, I think you are being bratty about the whole thing. The graduation thing isn't going to kill you, and neither is going to church. I mean that's what, a couple of hours out of your day? Really NOT as big of a deal as you are trying to make it seem. And if your friend has a job, of course she has to go to work. She can't just call her boss and say "Hey my friend is coming over so I can't work!". Most people wouldn't dare bring their friend to work with them, so be thankful you still get to spend the day with her. And as far as bringing your own food, what do you expect? You think they should go out and buy special food just to cater to your wants? If you are going to be picky, then don't complain when you have to bring your own food.