20 : Years the Nightclub & Bar Convention has been in Las Vegas ( and Chazz Palminteri is cutting the ribbon Tuesday to open the event at Expo Hall at Las Vegas Convention Center ) .
Bar Convention is in its 31st year overall .
20 : Years the Nightclub & Bar Convention , which is in its 31st year overall , has been in Las Vegas ( and Chazz Palminteri is cutting the ribbon Tuesday to open the event at Expo Hall at Las Vegas Convention Center ) .