Regularly have 4 bikes in the back of mine – easiest with the front wheel off, but you don’t need to. I actually find the seatpost to be more of a problem with larger bikes, so whip that off and you’re laughing.
Take the wheels off and you can have up to 5 bikes and 5 seats. No chance of any bikes in the back if you’re using all 7 seats though!
My Disco 3’s on 145k miles and other than wear-related things (suspension bushings, brakes, the usual sort of thing) it’s been fine. Did have to have a new propshaft about 10k miles ago, and the torque convertor’s just been reconditioned, but at this sort of age you can’t really blame that on reliability.