My niece, who is about to turn 7, and I worked in this kit. It was rated 6+ and it was supposed to take 2 hrs. It took the two of us approximately 6 hrs and so much of it could not be done by her.
At a point we were out of time to continue it together and I asked her if she wanted me to finish it or take it home and finish it with them. She looked at the kit and said “My parents can’t do this.”
From the mouth of babes. This isn’t my first kit from the same group and I gotta say add age and time to their estimate.
