The PD of WGM Team said that there's no script involved during filming. Not even a small piece of paper is sent to the couple. There's only a 1-day schedule that is given to their managers. There's a specific script that is called the variety script. (The script that details down what to do on the day of filming etc.) This (variety script) is not given to the couples, but before the filming, the PD will explain what they are going to do to the couples. 

English translation by @Taeyeonniex3 / apinkfansx3 @ a-pink.net

Please take out with credits ~ 

This news is the interview session on 9 Jan 2014 for WGM New Couple. And a reporter raised a question about WGM being scripted.

Omg!!!TaEun is real~