Pacific Business News held its fourth annual Pineapple 20 Awards event honoring some of Hawaii's most outstanding hospitality professionals on Thursday night. Click through the gallery above to see images from the event. The celebration, which was sponsored by the University of Hawaii at Manoa's Shidler College of Business, was held at the Hale Koa Hotel and 20 leaders in the travel and tourism industry, along with their co-workers, friends and family, attended the three-hour event to network, eat…