3rd time now that this has happened to me. Luckily, this time I caught it in time.
Playing on mobile, I loaded my Country Club page, clicked on the Clash button, viewed the current status of clash going on, then clicked on Play a Game at the top.
The course loaded was Kiawah, and before I clicked on Use a Pass, I looked at the tee markers- they were "plain jane". I exited the game, went back through Country Club, Clash, Play a Game.....
This time Pebble loaded with the astronaut markers.
The other 2x this has happened, I did not realize the issue until I had played my 9 holes and then went to see if I had helped my team at all, but saw no record of my playing. My club owner alerted me to the fact that I had played the wrong course.
I now check every time what tee markers are on the ground before I burn a pass and waste 9 holes of play.