Oilcanman87, print out a map of the Hershey fields. When you park just start working your way thru from one end to the other. I always started at the red fields and worked my way thru the chocolate and then across the pedestrian bridge into green and then orange last. 4 days will give you plenty of time. I used to do the whole thing in two days but that's moving along at a quick pace.
There is a little bit of everything there but most dealers know what they have and what it's worth. Get there early.
Can't vouch for Hotel Hershey room-to-room sales.