What happens in Vegas is supposed to stay in Vegas... but not when it comes to CinemaCon, which kicks off Monday night with a screening of Neon's Wild Rose starring Jessie Buckley. With Fox absorbed by Disney, Amazon canceling its luncheon and Sony taking the year off, the schedule is a bit lighter this year, so I had plenty of time to roam the convention halls and take photos of the various movie posters on display. For the uninitiated, CinemaCon is a convention where studios and exhibition vendors show their new wares to theater owners to get them excited …