Janet, we took this cruise November '04 and we went with the cruise line on the shore excursions. We took a tour that included a day at a local resort, dinner and then the cliff divers in the evening. I do not recommend the night show because all we have is photos of the cliffs, you can barely see the divers. The only bad thing about the offered excursion in Acapulco is that they cram you into this "jewlery store" beforehand and try to get you to spend your money there, assuming that because we are American that we are all wealthy! LOL! If you venture out of the store, there are young children pushing their "handmade" goods at you, "hello, Lady!" "Hello, my friend". Pay no attention to the pushy street vendors. Just go about your business.
After the divers do their thing, they position themselves along side of the tourists and wait for you to come by and "tip" them for their dives. They are pretty amazing, and we did tip, but just be prepared for it. If you have any more questions, I would be happy to answer, as we LOVED this cruise!