Stu is exactly right about the roadways forking etc. The right hand fork to the marina, the left hand one to the slipway.
Its never that busy, but some dive ribs do use it.
Best to park up first and take a walk down and a look, as the road around the wooden roundabout is tight
and not where you want to meet a vehicle coming the other way.
The Marina has an automated barrier. I really think they will be fine about keeping your trailer if you are keeping the boat there.
They do have a lot of parking and additional space behind the marina building.
I have stayed at this camp site. Self catering accommodation near Seahouses and Bamburgh, nestled on the Northumberland coastline
Its up the coast a little way from Amble, but has great views and an easy flat walk down to the dunes south of Bamburgh.
Good facilities and they rent out old steel wheels with stubby welded legs on them for your own personal fire pit.
It gets busy so worth booking early if you want a pitch with an electric hook up.
Check out Dunstanburgh castle - from the sea and the land,
the Seals at the Farne islands - the Craster Kippers,
and this pub at Newton by the Sea is always busy, The Ship Inn - home
and has good food and beer. It does get busy in the summer as well.