I think Cambridge was a great city to explore. Though, I think it was too expensive for what you got. 36£ for the bus drive and 1 hour guided Tour is pricey. Furthermore, I don’t think International Friends did so much to get us au pairs to meet each other. Luckily, I went with a friend but I can imagine that I was diffucult going on your own without knowing anyone. I would suggest some team building or some collaborative exercise maybe after the guided tour because 4 and a half hours were also a lot of spare time if you didn’t sail on the river. I think the team building could be a lot of fun as well. Maybe some kind of thing where you get a map per group and should find different things/ buildings in the city and answer some questions or something similar.