Sounds a great idea to me.
Been the the Scottish Land Rover Show a couple of times & feel like it’s all designed to part everyone with as much money as possible. They charge everyone who attends and do very little.
No doubt a Unimog event would be considerably smaller than a LR one, but an opportunity to get the Mog muddy have a few beers and catch up with like minded enthusiasts would be hard to beat.
Coming from Scotland - option of camping would be good.
Dan.