I think one of the huge differences between season 4 and other previous seasons is the quality of scenery videos captured. I think the advancement in technology has shown itself in previous episodes, but is the clearest in this Ulleungdo episode when magnificent scenes are captured through the helicams. Even the shots underwater are very nice too. I know Ulleungdo is magnificent, and had seen the island through previous seasons, but have never been this touched as I am with this episode.
I'm just through half of the episode - but some of the best moments for me are: - Dindin calling Seonho hyung for help in the skewer memomry game - he knows his hyung will help him out. - Kim Seonho bowing and greeting the cameraman in the room.