The slot is there for convience (and because it would cost more to remove it)
I use it when ever I use valet (so I dont have to explain CA)
I also use the slot when washing the car, otherwise when you spray water on the doors the lock/unlock the entire time.
Also the CA key will NOT charge in the slot- it has a non rechargeable battery.

Regarding seats- be sure to request Comfort Seats ( or even better the Active/Ventilated Seats)...they are not standard and must be ordered. These seats are a MUST!!!

BTW- Dont assume the dealer ordered everything you might want, demand a list of every option otherwise you will be dissapointed.

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2013 X5 35i M Sport