I usually stay at one of the hotels in Wyomissing. Traffic isn't great no matter how you get to the track, but if you stay in Wyomissing, you are not competing with all the cars coming in from the PA Turnpike. At this time, it may be hard to get a hotel room in the hotels closest to the track. You may have to be at one of the hotels an exit or two east or west of the Morgantown exit of the turnpike. Hotels in the Exton area will be one exit east of the exit for the track.
Jim