From Akrotiri, you can walk to the Red Beach or get a boat to it, which also makes stops at the White Beach and the Black Beach. It is 5 euros return but you don't recieve any ticket or reciept nor do they have the means to give you one. However, there is only one boat so they trust if you come back by it, you must have come so you aren't asked to pay again, only when you leave Akrotiri. The only stop with a pier is Akrotiri so if you intend to get off, tell them explicitly or they won't know to stop though they often ask and be prepared to get off directly into the sea and walk through the water to get to the beach. They always stop in waters shallow enough to walk in for adults highest it comes to is the waist so it is possible to bring bags, but make sure you can lift them above your head.
