Bmwlvr60, thank you for posting the interior pictures. Again, beautiful X3 and congrats.
Can you confirm for me where you have both the M-sport and Cold Weather Pkg I, does the heated steering wheel remain? From other posts that I have read, I believe it does. This will be my wife's primary vehicle and believe it or not the heated steering wheel is a "must have" for her.
Did you rent the GMC for the space? I suspect that for extended trips I would do the same (2 adults, 2 kids 2 dogs).