You have one free day in May, a train to catch, and no interest in spending half the break changing platforms. The forecast looks promising but not guaranteed, so the winning destination needs more than a pretty beach: it needs a compact centre, reliable transport, food that does not require a reservation weeks ahead, and a backup plan for rain. For most travellers, Brighton is the safest all-round choice. It gives you a proper seafront, a walkable centre, independent food, and enough indoor options to rescue the day if the wind turns cold. Other towns beat it for quiet beaches,…