GARRETT76,
I believe I have been to at least 10 Railfests at Steamtown and have always enjoyed myself. Crowds are not that bad if you get there early so you can park in their lot. Last year was outstanding with 765 visiting. NS and CP usually have something special there. Last year the SD60E 911 engine made its first appearance.
This year they will have their 0-6-0 Baldwin Steam engine running. Have not heard of any other visiting steam engines but you can never tell. I only live about an hour and a quarter away so I do not have a long drive. It is a two day event but Saturday is the day to go.
JohnB