Dream About Beach House Family Friends

I had a dream that I was in a beach house. My sister was there and I think some of her friends were there and some of my family. I was wandering around the house for a while. My sister was making cocktails for everyone at some point. Then I walked downstairs to see everyone and talk to everyone for a little while. I then went back upstairs to check on my sister and she was in the room that I was staying in with a friend. When I first walked in there I didn't see her but then I turned around and she appeared and she said something to me. She then walked out of the room and started dancing around the upstairs living room. I then walked downstairs outside and there was a beach. The waves were huge like the tide was coming in. I walked outside and my brother was in a lagoon kind of area and there were shells everywhere. I sat down with my brother and picked up some of the shells. I saw a yellow long shell and I picked it up. There was more that happened after that in my dream, but I can't remember.