I like the idea of an organised tour but the ones offered by the cruise line can be pricey. I know that there is that guarantee from the cruise line that you will not be left behind on one of the tours booked through them. Many travel agencies use outside vendors at lower rates. At least one vendor has a guarantee to get you back on time or they will pay to get you to the next port and all expenses included. In the years that they have been selling tours they have never had to honor this guarantee. It might be a good thing to ask your travel agent about this.
“Twenty years from now you will be more disappointed by the things that you didn’t do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.“