Travel to Sin City is facing its biggest slump since 9/11: In the past year, Vegas merchants have seen a 6 percent drop in sales. What this means to you: Airfare is cheap, and there will be fewer mountain bikers than normal in Bootleg Canyon, one of the country's least-appreciated playgrounds. With custom-built courses, miles of smooth, easy trails, and 60-degree highs in February, it's the ideal late-winter riding destination. Thirty minutes south of Las Vegas, Boulder City's All Mountain Cyclery rents full-suspension rides (allmountaincyclery.com). Crash at Green Valley Ranch Resort, Spa and Casino (doubles, $200; greenvalleyranchresort.com). It's close to the trails and offers just enough vice for you to blow your airfare savings.