we have one with another one on the way
those largest car seats that britax makes for the kids up to 80 lbs we have on in and no issues it fits fine
we thought about the regular 4 door but the FJ is well a FJ

nothing else like it
I guess the one side is we know they wont be jumping out the side doors or rolling down the windows chucking stuff out

hehehhe
but I dont know how much tougher it is to get access ? the only downside is when in a parking lot doing the back and forth shuffle cause of the side doors but access to them is easy enough
I guess a small penalty for a great rig that we love
I do wish the seats were on slides so I could slide them back more give them more room
I had thought of moving them back say 8 inches or so ? but I dont think it will be possible from glancing at it ? or would be a tough mod so doubt it will happen
if I want easy doors I will get a sliding door mini van ????
I would say do what I did bring the car seat down and load them up and drive it with them in it see how it goes
