Yes! Anyone is able to make an appointment at the Spa. Simply contact them at 541-764-4300 to make an appointment.
Yes! Just call ahead to make a reservation and indulge.
Yes, non-guests may utilize the spa!
Yes, I had asked them.
Since it is in a separate facility, across the street from the resort, I would think you could book services, even if you aren't staying at the resort, but am not sure.
I would hope any (paying)quest of the resort would be able to use their services. Just call ahead.
Get an answer from Salishan Spa and Golf Resort staff and past guests.