I’ve made my living as a pro photographer for over 30 years. These days I consider most cameras to be disposable. I also keep any older bodies as hazardous duty remote cameras. Once you get into the mindset it opens a certain amount of creativity.
I love the kid who is hamming it up at the bottom of the frame. I've been a photographer/videographer for my entire professional career and have run into this kid many, many times. Adults exhibit this behavior too but it is usually much more moderated.
This kid had to know what a camera was, which end was filming (some early film cameras appeared to be simple boxes), and wanted to make his mark on the final product.
I have the "Apollo Remastered" book and it is gorgeous. I'm going to buy this one too. Obviously they went back to the original film from the missions and did a full scan. NASA almost never gives access to the original film and instead we have been seeing duplicate transparencies which involves a loss of detail and dynamic range. They were good enough back then. But these first generation scans cannot be matched for detail and color.