You did the full day tour? That's very brave of you. We didn't do this when we visited Krabi. However, my brother and his wife did a full day and were exhausted kayaking after the lunch break. They still pushed on. They said they should have done the half-day tour and chilled by the beach the rest of the day. Still, they enjoyed the caves and the beautiful turquoise water as we can all see in your photos. :)