Is green curry not spicy?
It has heat. Even if the coconut milk makes it feel soft, the curry paste uses chilli. If you do not handle spicy food well, it helps to ask about the spice level before you order.
Kaeng Khiao Wan · แกงเขียวหวาน
If you want a fragrant curry with rice, choose green curry. Green curry paste is stirred into coconut milk and simmered with meat and vegetables. Basil-like herbs add aroma to the richness of coconut. The pale green colour looks mild, but it does have heat, so if you do not handle spicy food well, say so when you order.

Behind the rich, soft coconut milk you feel the heat of the curry paste. The herb aroma is also clear, so it tastes different from the curries you may know from home. Eat it by putting a little curry and its pieces on the rice at a time.
Even with coconut milk, it has heat. Ask about the spice level when you order.
Green curry is one of the signature dishes of central Thailand. In Thailand it is eaten not only with steamed rice but also with noodles such as khanom chin, or with roti. On a Bangkok trip, have a meal of curry with the meat you like and rice on the side.
It has heat. Even if the coconut milk makes it feel soft, the curry paste uses chilli. If you do not handle spicy food well, it helps to ask about the spice level before you order.
Not necessarily. Animal-based ingredients can go into the curry paste or the seasonings. If you are vegetarian, ask whether the paste and the sauce can be eaten as well as the meat.
If you want to read more about these dishes and regions, these sources are a good place to start. Ingredients and cooking methods can differ from one eatery to another.
Sharing image credit: Takeaway · CC BY-SA 3.0