Despite their claimed non-involvement, Otakon Vegas held a special meet and greet session with two musical groups brought over by LANTIS for their concert that occurred in Las Vegas earlier that same weekend. OV held a raffle for those attendees who went to both the convention and the concert and I managed to win one of the 25 tickets they awarded. The gathering was really nice, with snacks being served and an open Q&A session. There also was an autograph session, though no pictures were allowed.