Im pretty sure that Parrenporth has restrictions, but this time of year no-one cares.
Think its seasonal anyway, so will be cool. Watergate Bay rocks, just watch out for the lake on the left, great fun in the buggy. Keep an eye on the tide, it comes in really fast.
If want to go north a bit then Saunton sands rocks too, it's ment to have restrictions but if you walk up the beach 5-10 mins, then the beach is yours, even in the summer..