If I buy the CityPASS, do I have to use all the tickets in the same day?

Not required to use all the tickets same day. It comes with an expiry date. Check ticket for that

Hi Mary. No, you do not have to use all the passes in 1 day. My husband and I used the City Pass over the course of a week. The pass allows for spreading out your interests into multiple days. They Don't expire so quickly. *Enjoy your trip. We did👍