Coming from the west on I-10: Drive south past Palm Springs to Exit 139. Exit on Jefferson Street. Continue south on Jefferson. You'll cross Highway 111 (Home Depot is a landmark on your right) and continue 1 mile to Avenue 48. Turn left on Avenue 48 and continue approximately 1/2 mile. Look for a turn lane and the entrance to ORI.
Coming from east on I-10: Exit 146 onto Dillon Road toward CA-86. Continue on Dillon road over the railroad overpass and turn left onto Avenue 48. Continue about 4 miles on Avenue 48. After you cross Madison, continue straight. the ORI property corner is at Avenue 48 and Shields, and the entrance is a couple hundred yards on your right.
Big rig tip: Both of these options are big rig friendly with wide lanes and 50 MPH speeds. There are truck stops at Dillon Road (Exit 146) which are convenient for topping off either before arriving or after departing ORI. After pulling into the main entrance, look for the pull-through parking lot on your right. The resort's office is next to the lot.