I'm convinced that a huge chunk of the Silicon Valley workforce goes there just to gnarl up their traffic, meet with people they could actually have met locally, and let's face it, where the grown-up "Big Bang Theory" types go to be seen. Quite simply, it's nuts.
Desserts and drinks definitely live up the the hype. Hot chocolates (Coconut or Raspberry) are pricey at $9, but fab-u-lous. Split it with a friend, or take the leftovers in a to-go cup. Mix it with a little coffee for that last midnight drink.
The Sugar Factory is great for dessert or snacks. The food is fine but not fantastic. Ahi sliders were OK, but a ratatouille crepe I had was pretty good. Be forewarned that they tend to add sugar to everything, including plain ole' cappuccinos or lattes. Best to ask them to hold the sugar on the coffee drinks.
If you want to Dine/Eat, 1) make advance reservations, easily a month ahead, especially during CES and 2) try Yellowtail at the Bellagio at the high end, 3) mid-range Mon Ami Gabi in Paris or 3) Noodle Asia at the Venetian for a more casual meal. And you can always take a quick bite at Nathan's Hot Dogs on the way to the Monorail.
After eating like this for four days straight, I felt a little like Morgan Spurlock. Las Vegas itself is Super-sized, and a person should not eat like this all the time. However, if you have to travel for work, it's great place to go.
Eat Well. Be Well.