This is one of my favorite spots in Phoenix! The food is awesome and the staff are always super quick and nice. The hostess usually over estimates how long your wait will be, which I think is a good thing. Last weekend I was told it would be 1 hour, but since someone takes your drink order while you wait, it was no problem. We ended up being sat right when we got our drinks - it couldn't have been more than 20 minutes or so.
The burrata is a must. It pretty much melts in your mouth. What I like most about Federal is how easy they are about subbing and changing their pizzas. Obviously you can make your own, but if you want to sub out things on pre-designed pies, it's no big deal.
I usually go for the manifesto and add an egg on top. If you're into eggs on things it's a must try here. One funny thing is that they don't have hard liquor - only wine and beer. However, they have a selection of house made wine coolers. Grapefruit ginger is perfect for summer.