Pandemic demand may have changed things, but I played it as a single in May 2017 and June 2018. The first time, I called about 10 days out partly just to confirm the 24 hour policy and how the process worked, but the guy offered on his own to look at the tee sheet and book me as long as it wasn't real busy. He booked me as the first tee time of the day, and I was alone with no one going off after me for 30 minutes. I had Pebble all to myself. Totally surreal.
The 2nd time I called about a week out to see if I could pull the same bit. This girl wasn't going to offer on her own, but I told her I was going to be on a flight the day before and would be very appreciative if she might make an exception. She did, and again, I had the first tee time of the day. Although things were busier this time and I played with a twosome and another single. The single had called the day before so my strategy wasnt necessary, but it was nice knowing when i'd be playing further in advance.