Tom - Your chances are very high. I've played their twice as a single (2012 and 2018) and being a single gives you flexibility to change courses, tee times and multiple rounds/day on the fly, whereas threesomes and foursomes need to have their plans settled in advance. There were lots of other singles (and twosomes) with whom to be be paired up and, during my late April 2018 visit, I played an afternoon round by myself on a nearly empty Bandon Trails. On both of my visits, I had lodging and morning tee times set up in advance.
Give the resort a call to confirm all of that is still the case. If it is, you'll be glad you visited, whether or not it's your first time.