The Bongo is ok for the 4-person sleeping part, but trying to store all your stuff in the van alongside the sleepers is tricky. There’s space, but it’s not the easiest. Child car seats become a particular PITA.
The standard seats aren’t that flat either, so need a thick mattress to make it good.
But on the plus side. Comes insulated and with blinds and a fantastic quality pop-up roof as standard. Curtains come on most from Japan too. 4WD is pretty handy in muddy fields. Great normal car (mpg aside – mine gets 28). Fits whole bikes in. Seats 8. Simple cooker/sink/fridge units are cheap and easy to come by.
I’ll be honest, as a family of 4, we tend to use the tent instead unless it’s just for 1 night.