Another follower of the anti rattle threads here. Using the info in them I have found and eliminated the roof scissor knocking/rattle and the bed board squeak.
Also carpet lined and noise stopped the seat storage box to quieten that one down. Drivers seat was also squeaking but finally traced and sorted that as well.
What has defied my attempts to locate & fix is a rattle from the back of the van,
it’s not the table (left the table & camping chairs at home and went for a drive). Finally admitted defeat and took it into the dealer for them to search. Three hours investigation later they think it is some broken clips in the tailgate and have ordered replacements. Will see (hear) when they come in and are fitted. Does seem a likely cause as I had one journey where there was very little rattling and in that case I had the seats folded down and the multiflex board in place and the cushion would have been pushing against the tailgate trim. (I’ve got the 2 seater Beach version).
Hope you find and fix your rattle. While I was waiting in the dealers another couple in a red Cali came in with what sounded to me like the roof scissor rattle. Did mention the hosepipe section around pivot fix but technician was very reluctant to try, think I overheard they were going to replace the whole scissor assembly.