One thing the Patriots pride themselves on is their conditioning. This will be their 3rd Super Bowl in 4 years. They know that this game is like no other. Pre-game and halftime could not be any more different. 

I think Josh, Bill and Tom will plan to use no huddle early and often. Especially when the Eagles defenders are amped playing in the Super Bowl. If you don't control your emotional level early on, you'll be gased by the 4th. I expect the Patriots to play with pace.