I have been driving for Uber and Lyft in the area for the past few months.
Please do not try to go to the Contemporary without a dining reservation. You will be turned away; I guarantee it. Set your drop-off point as MK/TTC. That's the closest Uber or Lyft can get you. Alternatively, just take the Swan/Dolphin bus there. That gets you just as close.
Same goes for most of the other resorts. The guard always asks if the guest is staying at the hotel, checking in, or has a dining reservation when I drop off. Always, without fail.