I sailed while pregnant. When we were planning, we were told by a Carnival employee that we could get an exemption. I got the doctors note. When we booked we were told I could not get an exemption. We waited until we boarded and went to purchase one for the cabin. They said no. We pled our case. They said no. We tried customer service since we had been told by a Carnival employee that we could. They said no. We did not buy the package. I'm not as active on the forums as I used to be, but I've seen many people say they were refused personally. This thread is actually the first story I've ever heard of someone being granted an exception.