Do people forget how to surf?

After 18 months of almost daily surfing, my surf time is over for now. I have to move away from the beach and where I will live next there will be no ocean and no waves. I am guessing I could still surf a few days for holidays, but will it be worth it?
To what degree will I un-learn to surf? Is it like riding a bike (you never forget how to) or like playing the piano (lack of practice kills everything you learned). Anyone have any experience to share?
To what degree will I un-learn to surf? Is it like riding a bike (you never forget how to) or like playing the piano (lack of practice kills everything you learned). Anyone have any experience to share?