We used to visit Portmerion quite often. We would park in a layby near Boston Lodge Station (Ffestiniog railway)and walk over to Portmerion. There was a sign that said 'Private' as the path enter the Portmerion estate but there was never anyone to challenge you and you would get in for free.
Because the Prisoner was filmed there, if I should now go in my Caterham 7 I can now get in for free any way.
Don't forget to leave a review of the campsites you have visited this year or last!