A quick side trip while in Vegas. Nothing special - the chocolate factory tour is self guided, lackluster, and not really informative. I think everyone is in it for the free sample at the end. The cactus garden is cool but takes 2-3 minutes to walk through.
If you're in the area make a stop here. If not, it's not worth going out of your way for. You get what you pay for, in other words: it's free for a reason.