This was my first sea swim triathlon, and we were fortunately blessed with sunny calm weather on the day (we saw the start of the half marathon the day after, and it was much rougher).  

We'd registered the day before, but didn't see any massive queues on the day.  

The swim was fairly basic and easy to follow, though I would have preferred having a canoeist on both turn points.  The start was nice and wide, so it was fairly easy to find your own line and not too crowded.

We were helped out of the water onto the stones.  We'd been advised that we could leave shoes by the edge to help the crossing to cycle transition in the field.  It was really useful having toilets in the transition area, by the way.

The bike leg was on closed roads on the seafront, quite a short loop but straight apart from a tight 180 degree turn, which was quite awkward the first couple of times, especially if you can hear faster riders behind you.  Pulling away from the far turn (which was at the bottom of a slight incline) made it harder to get back up to speed.  As with loop courses, it can be a bit dispiriting to be constantly overtaken if you are (like me) a slower rider/runner.

The run was four out and back loops along the seafront, with good support from bystanders and supporters, and public toilets on the front.  There's a drink station at every loop.

All in all, this was a well organised event with good marshals, with a nice ride and run along the seafront.  

It should also be added that Seaford is a really nice town with some good walks, cafes and pubs, and it's well worth making a weekend of it.