A quick update. I received an email from Carnival saying I had already received an earlier onboard credit when they had a special and I would have to forfeit that one to receive the Sail from Florida rate. I had received a $190 OBC for the first drop and this new rate is $200 less than that rate. In my opinion I should have a total of $ 390 OBC.
I emailed them back so I'll see what they come up with next.
Anyone else have this problem?