See Master Thread: Using Priority Pass when flying WN:
Using Priority Pass when flying WN
If flying from TBIT the KLM lounge will be your best bet. If flying from WN terminal, you can now use the Virgin Clubhouse in T-2 before noon, but be advised you might have a long wait for security when you go back to T1, though zero wait if you have CLEAR.
As others have noted the VIP lounge at SJD is wonderful.