Do they have food?

Yes as everyone mentioned. There are also vending machines with salads and apple slices not just the basic chips and candy.

Yes

They have a bill grays..pizzahut/taco bell...subway...and an ice cream shop

Yes. fast food restaurants.

Yes, they have a diner at entrance, a subway , pizza hut/ taco bell and a ice cream store at food court.

As others have said, there is food. All the food is before the check-in counter, there is no food after you get in. However, after you check in you have a wristband, so you can always go back, eat, and return to the museum.

Bill Gray's, Pizza Hut, Taco Bell, Subway, and ice cream.

Yes, very great pricing

They have a restaurant at the enterance and a food court after the bathrooms at the main entrance.