Beautiful place to spend the afternoon (when it's not too hot). Amazing collection of botanicals! Beautiful artwork interdispersed with the gardens. Beautiful views. The butterfly tent is really fun.
Quietly bring your own snack even though it is discouraged. We saw a lot of people with their own lunch after we left ours in the car. The snack bar does have some very nice salads. The main restaurant was undergoing renovation when we were there but is open now. I've heard it is very good but pricey.
Definitely a must see, even if just for a couple of hours.