I just got my credit card bill for our 9/11 cruise so this info is still fresh in my mind! We spent about $485 on our shipboard account (4-night cruise) which included:
massage for me (heavenly and totally worth it)
Palo brunch surcharge and tip
Tips for everybody else
a couple pictures from Shutters
3 bottles of liquor
4 or 5 drinks (the Konk Koolers on
Castaway Cay are dee-licious!)
Sterling rolo link Mickey Head necklace for me $60 (also totally worth it--I love it and it reminds me of the cruise every time I wear it)
couple small gifts
Cruise line bag with bottled water for Castaway Cay
Apart from this, we also spent $170 or $180 (don't remember exact amount) to do the dolphin excursion. We saved about $50 by booking it ourselves. We LOVED it, would recommend it to anyone and it was worth every penny.
In addition, we toured the Pirate Museum in Nassau and found it quite interesting. If you liked the POTC movie, you'd probably like it. Admission was $12/person and it took about an hour.
I can't imagine spending thousands

but then again we don't drink much, we don't play bingo and we haven't brought our kids yet so Shutters hasn't been a major temptation.