During Christmas season this is a 4 star business. The light display is absolutely amazing. It's become somewhat of a family tradition to go look at the Christmas lights each year. Parking is a bit limited, but at nighttime the surrounding businesses don't seem to mind parking in their lots.
As for the rest of the year, it's kind of meh. It's called a cactus garden, but it's more of a desert garden. Mostly trees and bushes and not so much cacti. It's free though, so you can't really complain.
The factory "tour" is also free. It's basically a walk through where you can see the workers through the glass. It's not a big factory, more of a specialty brand. They'll give you a free piece o f chocolate at the end of the walkway.
The actual chocolate is good, but nothing to write home about. Really expensive though. Like more expensive than Ghirardelli.
It's worth going to if you have never been. And it's free (if you don't buy anything at the store) so it's definitely worth your time.