Expo - Milano 2015

On 24th of October, I'm going to Expo in Milan. I'll be there for just for two days, but I'd like see as much as I possibly can.
I know that usually there are long queues in front of each pavilion, but I hope we'll be lucky.
The theme is very interesting: feeding the Planet, energy for life. I'm very curious about how they've developed this theme.
I went on the web site and I looked at some of the pavilions; I have to say that the pavilions of China, Italy, Brazil, UK, Columbia and Azerbaijan are very interesting and really stand out.
I hope I'll be able to taste some typical dishes that usually I don't usually have an opportunity to taste; and above all I hope it won't be too expensive.
Bye guys!!