What should I pack? I'm used to humidity and haven't been back to Vegas in over 5 years. Weather.com says it's going to be 70 degrees most of the time with a low of high 50's....should i bring flip flops or go for closed sneakers? And does it get chilly at night, chilly enough for a NYer to bring a jacket or sweatshirt? I'm such an over thinker!!!! Thanks for indulging me!