First of all, Thank you, this was a great course. It really helped familiarize me to Blender 2.8.
Two problems occur when rendering.
1. The rendered scene has two rockets, one at the start point and one at whatever position it should be relative to the launch time line. When manually scrolling through the time line in the 3D view port, there is no duplicated rocket on the pad.
2. Each rendered scene also shows the same three craters raised out of position, yet on the model they are on the ground. What am I missing?