I don't see why you'd do this as a single 5-nighter. Especially with promotions right now, collecting 500 points for each mobile booking, plus the amenity each time makes 5 1-nighters less costly. Find Cat1 or 2 nearby or along your travel path.

1) Check in, specify Diamond amenity as points
2) Go to room, muss bed and pillow
3) Leave keycard on desk
4) I usually walk out a different exit, but probably doesn't matter.

Total time on site 10-15 minutes.