Allergies to milk, peanuts, lemon, watermelon, and pears... What to eat at theme park?

When I offered to take my niece to Universal Studios, I did not know about her allergies. Now, I'm taking an 8 year tomorrow that is allergic to peanuts, dairy in any form or amount, lemon, watermelon, and pears. We have an EPI pen (she's never had to use it before and we REALLY prefer we not use it either) due to the severity of the allergies. I know I can ask when we get there for a manager of a place, but I don't want to deal with that. What should I pack for lunch? She's got blueberry pop tarts for breakfast, and I thought we'd take an extra as a snack but beyond that and a bologna sandwich with sliced apples, I'm not sure. Any suggestions would be great. Thanks.