When stepping onto the set of a Star Wars movie is the second coolest thing you do in a day, that’s a pretty great day. But that’s exactly what happened earlier this month when io9 was among a group of journalists invited to see the first 18 minutes of The Mandalorian & Grogu in IMAX  and then visit the film’s set at a top secret location in Los Angeles, CA. Considering the movie is out in a month and that it was filmed at least a year ago, the invitation to visit the set seemed odd. Most movies take down sets when they’re done being used. But director Jon Favreau previously shot a lot of The Mandalorian TV show in Los Angeles, and at least one set made the jump from season three of the show to the movie, so it’s still there: the New Republic bar on Adelphi. It’s a popular watering hole visited by the likes of Carson Teva, Trapper Wolf , and Zeb Orrelios; you also see the bar in the trailers for The Mandalorian and Grogu.…