Hi. My aunty and uncle are on board now. They went to next cruise and have booked a cruise for next May on Symphony. The have booked for us as well we have 2 grand suites side by side. They have sent me our invoice and I can’t see that they have taken our diamond plus discount off. I can see we have $300 OBC. Can you only have one or the other.? OBC or diamond discount not both. Thank you.