I live in Ventura, my car is stored in a storage unit (no climate control) at the Ventura Marina that is only feet from the ocean. The salt air pits the exterior chrome a bit, the stainless parts (such as window trim) are not bothered. There has been no bubbling of painted surfaces to indicate there is unseen rusting occuring. I believe any damage that is going to occur will occur on the exterior surfaces where the sticky dew from the ocean air and/or fog settles. If the car is kept out of the fog and/or the exterior is cleaned regularly it should be OK.
If it helps to alleviate your concern, there is a large community of collector car owners living in the Monterey & Carmel area.
-G
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