Las Vegas' best outdoor activity? The Skywalk Grand Canyon, of course. For good reason, too: Where else on the planet can you walk 70 feet past the edge and be suspended 4,000 feet above the Colorado River? If defying gravity thrills you, listed here are seven things you need to know before you go:

1. Where is the Grand Canyon Skywalk Located?

The Glass Bridge is situated approximately 120 miles east of Las Vegas, NV, at Grand Canyon West. There are numerous ways to get there. The most popular are bus, helicopter, and airplane, which, from Vegas, take 2.5 hours, 45 minutes, and 25 minutes, respectively.

2. Exactly how much do tickets cost?

There are three packages to select from. Go with the Legacy Gold Package. It costs $87.69 per adult. It comes with tickets to the Skywalk and unrestricted access to all of Grand Canyon West, including Hualapai Ranch, Guano Point, Eagle Point. Native American presentations, cowboy demonstrations, and a BBQ lunch are also included.

3. How many people can be on the Skywalk at once?

The Skywalk's max occupancy at any one time is 120. It was built to support 800 people or a weight equivalent to71 fully loaded Boeing 747 airplanes.

4. Do you have to stand in line for a long time?

There can be lines, especially in high season. The Skywalk is the canyon's hottest attraction. More than 200,000 people visit it a year. Reservations are available. VIP tickets can be purchased that get you to the front of the line quicker. I suggest you show up in your most comfortable shoes. If you have an iPod, consider bringing it.

5. What Should I wear and what should I bring?

Definitely bring a water bottle (full) and sun block. Dress appropriately: Wind-resistant and cool in the summer months and warm layers in winter.

No outside food or drinks (except water) are allowed. The Skywalk sports a full-service snack bar if you get the munchies. Remember - Legacy Gold Packages include lunch.

Make sure to pack extra batteries and memory sticks with your camera. Unfortunately, cameras are banned from the Skywalk as they may chip the glass deck (each panel reportedly costs $200,000 each) if dropped. Professional photographers are available to take your picture on the bridge. Don't let that discourage you. You've got the entire West Rim to photograph, and the views are one-in-a-million.

6. Is there a time limit?

Currently, there is no time limit, so take your time and enjoy the incredible landscape. The best views are to be had on the right side of the bridge.

7. Is there anything else to do or see at the West Rim other than the Skywalk?

Plenty. There's the Indian Village with authentic dwellings, Guano Point, The Hualapai Market, a western town replica called The Hualapai Ranch, and a 250-seat amphitheater. The basic Legacy package ($43.05 per person) get you access to all of these attractions except the Skywalk.

Need a quick, enjoyable Las Vegas day trip? Look no further than the Skywalk Grand Canyon. Choose carefully how you visit as the price can add up. Bus, helicopter, and airplane tours are your most economic route to go, especially if you book online direct with the tour operator. I consistently save up to 35% using this strategy. So put the Skywalk on your list of things to do. It'll be the highlight of your trip.