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We aren't big fans of shore excursions either and we usually try to explore on our own. I do agree that in some parts of the world, an organized excursion is the way to go, but you can usually find an independent tour that does basically the same thing but can be tailored to your own interests. When I plan for a cruise, I usually use the cruise line's excursion brochure to get my own ideas of what to do in town, and then book a similar tour on my own. Some excursions I've done have been absolutely horrible and I hated the "cattle call" feeling. But others on the excursions loved them because they like having a set itinerary and "falling in line." I say to each his or her own, do what you love as long as you are exploring new places and cultures!!