less is indeed more.
We ended up skipping Friday night, and as it was one night only (Sat), we took just the basics.
No tables, no chairs, no cooker, no lanterns...
What we did take:
Fat Airics & duvet (will replace with sleeping bags on next short camp as schlepp to carry from car)
A flat LED light for the tent, plus one head torch
Storm kettle for coffee
One cup each (used for wine and coffee)
Travel cot and duvet for ds - this one big, but we've found he sleeps best in that. Wee Airic under cot (well, we have it now anyway, so might as well stop that cold from the ground!)
Foil, salt, coffee, wine. Bought corn on the cob to cook over the coals, milk, bread, butter and cheese there.
Clothes, pack of cards, tiny cars for ds (to play inside if rains).
There was probably something else I now forget, but there was still SPACE left in the car. Loads of space! 
I know!
Most importantly, it was so nice. This time we stayed in the Vango Orchy, but as basics worked so well for us, we're going to buy an inner for pop-up day tent (Quencha Base Seconds Full) to sleep in, and all just bundle up there. We went blackberry picking, played in the stream, on the rope swings, walked around - no need for anything else really.
I'll still take my bell tent and other things for longer trips, but it's like this whole world of overnight camping has just opened up! 
Sorry if you've just fallen asleep btw, but I had to tell someone! :)