That looks fun There is a car I recognise from Thenay in the first picture, white with a distinctive 'city' pattern.
In the first picture, what's going on with that yellow one towards the back? the windscreen looks a weird shape!
The Rien à déclarer event sounds good! I want to go to one R4 gathering in Europe this summer, so it'll be either that or Thenay, mainly depending on how much money I have because Thenay is a long drive away!