Twenty rooms at the Gateway Motel are set to house art and activist messages during the Greetings From Las Vegas pop-up art event scheduled from 6 to 10 p.m. Dec. 5 at the 928 Las Vegas Blvd. South motel. The rooms are set to be converted for one night to exhibition space for artists, designers, activists and community members to showcase visions of a greener, more sustainable Las Vegas Valley. The event is set to include food, beer, live music and burlesque dancers. For more information, visit greetingsfromlv.com.