Every hotel on the strip has taxis at their door. No taxi stands. Taxis are not allow to stop or drop off on the strip itself - just at hotel/casino checkin areas.
By the way, Uber/Lyft is growing in Vegas. Some use the same area as Taxis, some use a different area.
ADDED - when you are in Vegas, you just go to door and they will get you a cab. If you are in the casino and not sure where - just ask anyone and they will point you in the right direction. In most cases it is near checkin.