Streamed it first to see if it was worth buying on disc, it is.
They have a really cool commentary feature where the image is shrunk to a 4:3 image so they can split it top and bottom.
The top image is the film as presented, the bottom image is the raw footage before visual effects were applied.
It lets you see how much of the film was digital and how much was practical. Complete with commentary.
Acting in 1964: Practical sets, props, and costumes, the give and take of acting with other actors
Acting in 2024: Wear a spandex laser tag outfit with a GoPro pointed at your spotted face and run around an empty blue warehouse
A surprising amount of the film was actually shot on location. The screengrabs here don’t do it justice.
When I poster this at the time there was a video showing clips of this that isn’t showing now, but that clearly shows all the main cast acting together, so the blue screen studio wasn’t empty.