Don't pick weird subnets for embedded networks, use VRFs

So what is an embedded network? I found it pretty hard to find a good name for this but I've come across them many times and created some myself. A good example here is a portable video rack. You drag a rack case around with video and network equipment and you need to connect it to the network of the venue to stream to the internet. The devices in the rack need to communicate with each other but you don't want to reconfigure their addresses every time you move to another venue because it happens to use anot