We have used the pool at Le Mirage without being a guest but that was many years ago so I'm not sure now. Going back a couple of years ago we walked into Begona Hotel (beside Peewee's) and they said we were welcome to use the pool and pool deck just as long as we were buying at the bar and/or restaurant, but again that was a few years ago. I think Begona might be your best bet. Maybe message them at reservations@begonacliffhotel.com

RIP Rob