IT'S HOT SO STAY HYDRATED
Las Vegas gets hot. If your vacation brings you to this desert oasis in the summer, you will want to dress in your favorite clothing that beats the heat. That may include shorts, tank tops and sandals, but you may want to have a jacket handy for venturing into the casinos as the air conditioning may be set quite cool. The opposite goes for winter. The outdoors is cold and the indoors can get pretty toasty, so opt for a heavy jacket that you can easily put on and take off.
Also, be sure to stay hydrated and sip water throughout the day. When the temperature rises above 100 degrees, which happens most days in July and August, it can quickly sap your energy. If you start to feel sick, chances are you are dehydrated. This happens in both summer and winter seasons in this desert settings. Consider picking up some bottled water at a grocery store where it's less expensive.