The Mandalay Bay Convention Center is growing up. JCK Las Vegas showgoers can expect to find a rearranged show floor that includes new neighborhoods and a brand-new buying event from the folks at JCK’s sister show, JIS. Yancy Weinrich, senior vice president of Reed Jewelry Group, spoke to JCK about the best way to navigate the shows, where to relax, and what additional changes we can expect in 2017.    With all the changes at JCK, what’s your best advice for buyers? Yancy Weinrich: The mobile app is the important thing. It’s your exhibitor listing and event listing and helps you navigate the event. Between all the exhibitor moves, the app helps you go from booth to booth, and event to event. Just go to the App Store and search for the JCK mobile app.   What do people need to know about JIS Exchange at the Tropicana? YW: JIS Exchange is your destinat