This is a question I've got also.
Nevada does not recognize my CCW from Florida for some reason so that only leaves open carry as an option in Nevada. Am I interpreting that correctly?
As you see, open carry is legal in Nevada. There is some restrictions some pointed out here, check out the pamphlet for other restrictions. Staying in Las Vegas and open carrying without causing a problem is fairly easy. However, most hotels and casinos do not allow firearms in their facility. It is not a law just their property rule.
Most are polite in asking to have the firearm secured. If the person does not comply they can only ask you to leave, if one does not leave, they then can issue a trespassing warning, if one still does not comply they can call the police and have the non-complier arrested for trespassing. The arrest will be the same as being arrested for not complying to put a shirt on. There is no Nevada law that keeps legally carried firearms out of casinos. Just their facility rules.
Read some of the posting on the thread (where did you carry and how did it go) and you will see many here open carry all over Las Vegas. I have not been tossed out of any non-casino restaurant or general type shopping facility open carrying in Las Vegas. The law is the same for any legally carrying visitor.