[8] Similar to the previous season, the three actors (who all starred in Reply 1994[9][10]) were also not informed about their trip to Laos and only found out about it three hours before the flight.

The three actors went to Iceland on November 25, 2015, whereas Kang Ha-neul, who thought he couldn't go due to his commitment to appear at the Blue Dragon Film Awards, was surprised by the Youth Over Flowers team and taken right after the award show to join the other actors on November 26, 2015.

[11][12] On January 22, 2016, Ahn Jae-hong, Ryu Jun-yeol, and Go Kyung-pyo were surprised by Youth Over Flowers team during the last day of their Reply 1988's celebratory vacation in Phuket, Thailand and were taken to Namibia.

Park Bo-gum who had returned from Phuket early for his Music Bank filming was taken right after the recording concluded.

After completing the mission on New Journey to the West 4, Song Min-ho chose to film Youth Over Flowers with his band (Winner) as his prize.