We found it very easy to take the trip first thing in the morning. No problem from a sea-sickness standpoint as we picked a very calm day to go over there. We did not rent a car though. Rather, we had a taxi driver give us a tour and take us to the beach at Shoal Bay. We gave him a pickup time and he was there with no problem. (we paid after the pickup).

We ate at a little place on the beach and had a pleasant lunch.

I must admit that having a car would have given us a better ability to explore; but, we really wanted the beach and the water for that trip.