What to bring
That's easy. You can bring flip flops but may not even need them. Other than that- a swim suit and an appetite!
On board we keep a variety of sunscreens, complete set of towels including beach towels, shower essentials & hair appliances.
A swim shirt with SPF is a good idea for snorkelling and exploring The Baths and a small dry bag to take phones/cash ashore especially if you're swimming from Sea Boss!