It is interesting to read through the responses from people as to their thoughts on rally participation. It is not just the MV scene that this applies to, but is similar to any vintage vehicle or machinery event.
As others have said they choose which events they attend. An important factor here is distance and the costs of transporting, particularly larger items hundreds of km either way. There are also time constrains, and work commitments so at times its travel by car or fly a greater distance, and help others out on site. This also allows a degree of freedom to talk with other owners and compare items and with that the chance to acquire or pass on parts that are needed.
The comments made as to presentation of some peoples vehicles are so true, even here on the other side of the world. The clutter of personal gear about vehicles can be quite distracting for photographing a scene. My pet hate is the use of modern style folding chairs parked beside a vehicle, totally out of character to the scene. Other styles of wooden folding chairs of a period design are available and can fit well into a photo.
As for the latter additional categories of collecting and storing bits, I well fit into that group! Yes I have piles of parts, often saved from otherwise a scrap man. Slowly enough parts of the various models are being located and the rebuilds are progressing forward.
One only has to read through the great work undertaken on this forum of some restorations from non operative piles of parts. The role of the Gosling's with their Dennis and Thornycroft well illustrate this.
I feel the points as to eventual disposal by should be a further category. The value of parts is based upon who wants them.
Rallies and events are great to get to, but remember some people have more funds, time, energy and health available than others.
Doug