Right so after,getting my parents into cycling as a means of fitness, I've now convinced them to combine it with camping, albeit a little different from you, as they're towing a caravan....

So we plan to camp for 2 nights at Glyncorrwg mountain bike centre, they have the caravan while I'll be outside it under a tiny shelter like a dirt bag.
Then we ride as much on the afan valley as we can, I get to test my new mtb on trails and they test their fitness

Now this might not technically be bikepacking, but its better to get out there, even by car, Than not at all.

as they're towing a caravan....

OK I've heard of packing a few luxuries and man-ing up but your folks must have legs like Chris Hoy

(I did see the 'by car bit', but only after that mental image)