I do my best to save us money, but then my wife figures out a way to spend it :razz:.
The best savings for us is to find what shore excursions we want and then do them ourselves. The cruise lines charge way to much. The only exception that we make is if an excursion might be limited to the number of people, such as swim with the dolphins.
Other than that we don't really save much. My wife always buys photos, even though I think we have a million of them by now. A friend and I did think it was funny that we spent so much time bargaining in port to save a dollar, but then spent like $7.00 on a beer. Oh well, all part of the fun!!!