The OBC is on your account once you check-in. You can see all your activity on the TV.
SS Norway (12 times) '85 - '97; Radiance OS 06/01; Island Princess 11/04, Grand Princess 11/04/05, Golden Princess 7/21/06, Golden Princess 2/24/07, Explorer of the Seas 12/23/07, Island Princess 11/15/08
I think one needs to put a charge on the On board account before the OBC will begin to show.
When we were on Jewel OTS two months ago, our OBC was on our account the second day. We hadn't charged anything yet, but the OBC was there. Maybe it differs from ship to ship.
Grandeur of the Seas 1-11-14
Grandeur of the Seas 1-21-14
Grandeur of the Seas 1-31-14
Navigator of the Seas 10-12-14
Navigator of the Seas 10-19-14
Serenade of the Seas 1-10-15
Serenade of the Seas 1-17-15
Serenade of the Seas 1-24-15