convention center

Maes, I know this rod is not for this but I need help 😭 In a short time I have an activity at the CR convention center, Heredia, but I need to arrive early to have a good view of the event, but I have never been, I don't know where the main entrance is, or where one enters or waits, the doors will open at 7pm, but I want to arrive early, could someone guide me? I would appreciate it all my life.