wear any non wing shirt you have LOL...... if you want the absolute best view of warmups and you plan to buy a pit pass, go to the end of the front straight in the 4th turn. stand at the end of the fence and you will be within 10 feet of the cars on the track. just remember that the cars coming off the track after warmups cant see as they come off the track and into the pits so dont walk down the pit lane or stand in any spot that doesnt have a cars in it when they come in.
IMO, the best experience is to walk around to different spots during the night...infield, pits, beer hill, front straight stands. there is a tunnel in the first turn going from the infield to the front straight stands. if you see an older lady driving a golf cart, get the hell outta her way....she aint scared! and if the girl is working at the cheesesteak booth in the infield, you might wanna have your camera ready!
as for saturday night, lincoln speedway is your best bet i believe.