Question for Buddhists?

I am a 16 year old American, who has studied Buddhism, and I feel like it would be the right spiritual path for me. I do not want to practice Western Buddhism though, because I would rather practice traditional Buddhism as is practiced in Asia. There is a Theravada Buddhist Temple in a nearby city, and Theravada is the tradition that appeals most to me. After reading about it, almost all of the people are from Cambodia, Thailand, and Laos. This is fine, because I think all humans are the same regardless of nationality and I in fact like an Asian girl at my school, but the problem is I'm worried that English won't be spoken and that I won't fit into the cultural customs of the Temple. I would be willing to do all the same things as them, but I don't want to stand out because of the cultural differences. What should I do? Do I need to call the monk at the temple and tell him I want to start practicing Theravada Buddhism? I'm just not clear how to go about this.