Ditto for me as well. With the cruises I have been taken, rather frequently 😉...it's nice I can use the stock OBC on all three lines. Has just been RCI, but X is coming up (OBC applied already), and want to cruise Silversea in the future.
Then later...if and when I am not cruising any longer (though I don't see that happening just yet)...I can hopefully cash in the gain. Win..win. 🙂