Been here a few times, and I've had a great time every time. It's peaceful, pretty, interesting, and fun. I absolutely love the animal shows, and the backstage pass to hold the animals is worth it ($10). I love that they have so many activities for the kids.
The gardens are very nice, a welcome splash of color in this ocean of brown, brown and more brown. It does seem family-oriented, but it can be romantic to stroll around and take pictures. Love the cafe, too- we only ate there once, but the prices were reasonable for the quality of food. We'll be returning often, as we got the membership.