There was plenty of night time action on the main floor of the hotel, but when we wanted to turn in, our room, which was on the 14th floor, was quiet throughout the night and late into the morning. Overall, our experience there was excellent, and we would return.
I chose the Sahara because it was the last hotel on the end of the strip, and I thought it might be a little quieter for older adults (we are 60) than those in the middle of the strip, and we were right.