Translation of reemplazar

At noon the oldest soon came home. He was a doctor and gave me some salt and other Cuban medicine. I was reluctant to swallow that stuff but the pain and the doctor's smile persuaded me in the end.
Whatever you decide is fine for me. We arrived in the USA. I remember you telling me that you are working with Holiday Inn. Is there any way that we could get the discount price directly from the hotel?
The ship stopped in the middle of several limestone islands and passengers went swimming in the middle of the sea. There were dozens of other boats around us as the area was very touristy.