Yes, most exhibition halls have their own restaurants that serve local food. Of course, there is no such thing as a free lunch, so you have to pay. French, Spanish and Italian restaurants are relatively expensive. In Italy, one serving of ice cream and pasta in 65 yuan is above 120, while in Belgium, it is above average, with more than 200 per capita. Their chocolate Mu Si is super delicious, about 45%. Singapore's is cheaper.

What's the price of restaurants in the World Expo?

The picture below should be relatively complete, maybe a little small. Click to enlarge.