It is completely up to you on whether or not you want to follow the break in period. The manual says the break period is 681 miles and includes no hard acceleration or breaking, no driving at a constant speed for a long period of time (varying your speed), no high speed driving and a few others I believe.
Some people only wait for the 681 miles and then go ball$ to the wall, some don't and pushed the engine hard as they left the dealership, others waited for higher miles before pushing it real hard.
Personally I just drove it like its going to be driven, mostly relaxed driving with a few hard runs here and there and high speeds every once in a while, its completely up to you
Hope this helps