Longniddry Bents Car Parks. Seton Sands/Aberlady Head out of Edinburgh on the A1 heading south and take the coast road to North Berwick. The car-parks are just after the Seton Sands Caravan Park. There are 3 car parks and the 3rd is often the best on most Friday and Saturday nights however its always worth checking them all out. More likely to see like minded individuals looking for fun from say 10:30pm onwards in the 3rd car park. Patience as always is required. If you get lucky their are secluded areas near by for a bit more privacy :-)