Honestly cannot say I've ever had any of the chocolate here, but I have been to see the cactus garden all lit up for Christmas twice and it is truly a treat! The garden is actually not extremely large, but they pack a TON of sparkle into that space! I love how unusual and interesting all of the different cacti look with glowing and flashing lights. My siblings and I walked around for about 30-40 minutes and it was a great amount of time.
I will warn that we went on about December 31 (I think?) and some of the lights seemed to have burnt out; not a ton and definitely not enough to dampen (darken?) our experience in the slightest.
Maybe next time I will actually try some chocolate, as I don't feel comfortable giving a 5-star review when all I've experienced is the garden.