A big part of the cruise experience is exploring the fantastic ports of call that your ship is destined to visit. In the past, shore excursions were almost always operated via the cruise lines, however today, thanks to the ease and access of the World Wide Web, many passengers are opting to purchase their tours independently. The debate continues as to which option is actually best – cruise line or on-line. Should passengers be genuinely concerned about purchasing tours from an on-line tour operator? Or are cruise lines forcing their guests in this direction by charging too much? Read on and judge for yourself.