We never used our 2 free nights-booked a cruise with it but when there was a special offer that was much lower I gave up the “free nights” and rebooked at the lower fare. I am using my 4 nights on a 7 night Croatia Intensive in the fall. I also booked on board so we received that discount as well as $150 per person OBC. I added the previous cruise too, so we also have the B2B discount. I keep monitoring the cost and so far the free nights are working out. On a previous thread on the free night topic, someone said it is best to use them on a 7 day cruise or a Norway Intensive which doesn’t get discounted often.