I do this regularly as I often shift motorbikes in my multi, I remove all of the seats except the drivers seat, I have a special spanner for the job, it's a 16mm jointed ratchet spanner, although ordinary socket sets can be used, the bolts are a little bit aukward without this.
First remove the outer front seats, taking care to disconnect the airbag connector on the passenger side, then remove the heater channels from the middle seat, you'll see how they are fixed on, then you can get to the bolts holding down the middle seat. There's no problem having the airbag disconnected, the warning light comes on but it's no problem, I've driven for 100's of miles like this. It would be possible to rigg up a plug to complete the circuit to prevent the light coming on if desired, I must admit that having the warning light on the dash a bit of a pain. I've never seen the way a fridge is fitted, so I can't comment on fridge removal.