Convenient tea ceremony
Mainly in spring and summer, Nodate, out door tea services, would be given in Japanese gardens and temples. Nodate is a a convenient tea service performed in the spirit of the tea ceremony, where you can be served the Matcha (powdered green tea) while sitting on benches under the seasonal blossoms.
If you find such an opportunity to attend Nodate, I recommend that you take it. On Nodate tea service, you can easily enjoy both the authentic powdered green tea and atmosphere of Japnese tea ceremony with a few rules of behavior under the sun. It should be a unique experience for you if you have not attended an actual tea ceremony yet.