Minniegidget,
Don't worry about being the first off the ship. You will find plenty of space on the beach. We were traveling with two other families and my family got off first because we were ready. We just planned on meeting in front of the volleyball area. There was no one done there, plenty of umbrellas and chairs also. We were not looking to get hammocks or whatever as there is too much to do on CC and not enough time. We played volleyball, snorkled, a little floating, lunch, a little more snorkling and it was time to go. Some of the adults went to the adult area to snorkle and by the time they came back the beach was empty as the water was closed.
Don't stress about being the first off. They will announce where you get off the ship as it depends on how they dock.