I'm not a fan of product placement either, but sadly, in this case, that is one of the reasons I was able to play PSp2. They inserted Pizza Hut items, Fate/Stay Night costumes and weapons, Evangelion costumes and weapons Fanta things (at least in real world advertisements) and a I think a Famitsu magazine shield.
Companies advertising their products helped fund the game, and quite honestly, the real content, as opposed to advertisements, is HUGE. There were no scenes with say, Emilia drinking a Fanta soda or Crouch and Yuuto eating a pizza. The game itself doesn't show that, unless you go and unlock an item somehow.
If what you don't wanna see is a Pizza Hut box, I at least haven't found it and believe me, I have played the game a lot. The items I actively obtained were the Evangelion and Fate costumes and weapons, but that was because I happen to be a fan of those series. There is a Famitsu shield I unlocked, didn't like and dropped off when I started a mission. Product placement is marginal.