Critics generally consider the pilot a solid, if slightly unpolished, start. Reviews on Rotten Tomatoes highlight how well it establishes the show's dark humor and "limitless sandbox" without getting lost in exposition.
Region 5 covers Russia, India, Africa, and parts of Eastern Europe. Why does that matter? Major studios would send "work-in-progress" DVDs to these regions early for dubbing and localization. rick and morty s01e01 r5