If you've cruised a few times, you've witnessed this scene: The ship arrives in port, and the best attractions and sites are suddenly swarmed with people. It’s a less-than-ideal way to enjoy the day. That's why it's important to find an expert, English-speaking guide who can get you off the beaten path to enjoy a behind-the-scenes look at a destination. And here’s an added bonus: You can share all the interesting stories you learned with fellow cruisers who missed out by waiting in long lines. These are some of our favorite tour operators in ports around the globe.