Classic rides are also plotted by clubs, associations and other people and associations that are not professionally involved.
And those enthusiasts, often with a good cause as a motive, do not always take into account all the regulations and requirements of the government and insurers.
In the worst case, you, as the organizer, can then be held jointly and severally liable for damages that you could not have dreamed about.
Moreover, the police can "wipe the road" off the entire event. And hold you liable.
Moreover, if you have not made proper agreements with insurers and that insurers exclude participants from trips from being insured ...
AMK nr 1 contains a few informative messages about this matter.