The agent was able to use the promo 2 cat upgrade and 500 euro obc a second time. A TA I originally contacted said it could only be used once. The upgrade was from a Ocean Grand Terrace (GT) to a deluxe penthouse (DP) which saved ~3+K USD. The EJ agent did the same upgrade on my first cruise, even, though I had it booked before the promo became available, so you might say saved another ~3+K.