We sat right infront of Pizzafari about 3/4 hour before and the CM's were just marking the path out with tape. The width was quite narrow so we didn't get squashed by loads of people. Also you could see quite a distance to the left and watch the parade coming towards you, we got excellent video of the parade from there with no-one getting in the way.
I should think that as long as you get there early enough and pitch a spot right at the front (you can't go any further forward than the tape) you should get an excellent view.