I haven’t been to S03 since pre-pandemic, so things may have changed. Back then:
Walking was an option if you had minimal bags. About 3.5 miles, some uphill.
Skinner aviation (FBO) could get you a rental car, advance notice required.
Taxi service was good, relatively inexpensive, except immediately after an evening play ended. Then you could expect a wait of up to an hour. Some of the outlying hotels ran a shuttle to the theaters, but, certainly, it was most convenient to stay downtown and walk to plays, restaurants.