The casting was great, however story wise... it was so-so. The actors played their characters well, it was surprising to find Kim Soo Hyun going back to his character as a dorky love stricken guy. Then there is IU, who I may say I have taken a keen interest with and a biased liking due to her "Dream High" character. As for Gong Hyo-Jin and Cha Tae-Hyun... these guys are veterans. What more can I say about them except that they have superb skills in acting? All these combined, I was still left hanging all throughout the drama. I have this nagging thought, "This is it? After all those 12 episodes, this is it? Where are the accomplishments?", I was left unsatisfied and that was a bit sad. It was rather short, they could have added at least 4 or 5 more episodes to give fulfillment to each of the main characters, to their career and over all life. Setting the above mentioned aside - I did liked the ending, although it felt a bit rushed, at least there was closure for the characters, but then again I still wish there were more episodes to elaborate on what happened after. I seriously wanted to see snippets of "2 days and 1 night" but sadly they didn't show us anything more than what they wanted to. However, over all it was a fun series, nothing dramatic or too funny. It's all light and entertaining, though it's not something that would entirely leave a mark for your drama watching career. I would recommend it to pass the time but if you are a fan of any of the main characters, then I highly suggest this - to indulge.