These outlets are so awesome and are a must stop if you're in Vegas. There are plenty of shopping options, all with really nice premium shopping options at affordable prices. Some of my favorite shops are Off Saks, Scotch and Soda, Neiman Marcus, and All Saints.
Be sure to stop by the Guest Services booth and check in with Yelp to get a free coupon book with most of the retailers. If you're staying on the Vegas Strip, it's about $10-15 one way to get to the North Outlets by Uber it Lyft.
Also, one cool thing the city of Las Vegas has is a shuttle bus called "Downtown Loop", which is complimentary and runs frequently. It picks you up and drops you off at destinations downtown such as the Outlets, Fremont Street, Mob Museum, and The Gold and Silver Pawn Shop (Pawn Stars shop). If you take it from the Outlets, it picks you up behind the Nautica store.