From Nanjing to Wuzhen, I just
recommend that you go by yourself. Anyway, it's not far. It's usually boring to travel with a group for a day.
Remember to stay in Xizha Scenic Area for one night and feel the night view of Wuzhen and the feeling of dawn the next day.
Wuzhen's unique tranquility is definitely different from other ancient towns.
It's very convenient to go to Wuzhen directly by car from the East Station.