Grab a cab outside the hotel for brunch at Hash House A Go Go on South Las Vegas Boulevard. The kitchen here has been voted Best Breakfast in Las Vegas by Yahoo Travel, and the kids can eat their fill of French toast and buttermilk pancakes while you try one of the excellent Bloody Marys
After brunch it's time for some fun at Adventuredome, the world's largest indoor theme park. The towering glass ceiling lets in the sunlight but not the heat so you can spend the morning riding a double-loop roller coaster, running through a game of laser-tag, or playing video games in the cavernous arcade. If you're feeling brave, buy a ticket for El Loco, one of only six rides of its kind in the world; the gravity-defying open cars will take you through negative-g drops and a series of reverse barrel rolls.
Now it's on to Shark Reef at Mandalay Bay, where you can get up-close and personal with an impressive menagerie of animals including golden crocodiles, sea turtles, jellyfish, and Komodo dragons. The highlight? Walk through glass tunnels around a 1.6-million-gallon aquarium filled with sharks.
For more animal fun, head to Siegfried & Roy's Secret Garden & Dolphin Habitat, a miniature zoo with a regular rotation of exotic cats and a family of Atlantic bottle-nosed dolphins.
Start the evening with dinner at Carnival World Buffet, with over 300 dishes to choose from fresh seafood, pasta and Chinese dim sum to freshly-made gelato and German chocolate cake. The setting is casual and family-friendly, and kids under-three eat for free.
After dinner, check out Terry Fator's puppet act, a one-of-a-kind musical act filled with comedy, celebrity impressions, ventriloquism and a live band - one of Vegas's most popular shows.