If you go over to Rhodes on the Aegean boat, the trip is OK. However IF they use the dolphin, the journey time is in the lap of the Gods, because it's a knackered wreck which hopefully will no longer been in service. The seats up front are barely attached to the floor and the vessel limps along, which is shocking. On one of my visits, the dolphin left two hours late and took almost three hours to get back to Fethiye in very high seas. It was a nightmare, the waves were coming right over the thing - people were hysterical and children were in a right state. Getting on the thing in Rhodes was a joke - NO form of control. Some passengers had flown into Rhodes and were travelling over to Fethiye (four children & four adults with their luggage), it was horrendous. Best of luck. On the plus side, Rhodes is beautiful but take euros with you otherwise you will get ripped off with their exchange rate.