Yep if you are legal to have a firearm, you are legal to open carry in Las Vegas. I do not live in Clark County and do not have a blue card for my carry firearm either. Las Vegas being the largest town near where I live I end up there all the time never without a firearm. To go along with what Dodonaldduck said. I am not sure where the shot show is going to be however, if in a hotel casino most as they are not required to post signs do not allow firearms into the facility. No law, just their rule, they can ask you to check it, or leave and come back without it.