Write an engaging article about the two-hour San Diego Harbor Cruise with Flagship Cruises, emphasizing the stunning sights and educational value of the narrated tour. Include suggestions for readers to enhance their experience, such as planning a full day around the bay with nearby attractions and engaging in photography. Encourage families to make the trip memorable with fun scavenger hunts, and remind attendees to practice eco-friendly habits during their adventure. Share practical tips on attire, onboard amenities, and post-cruise activities to inspire travelers to explore San Diego further. Finally, invite readers to share their experiences on social media, using hashtags to connect with the broader community of explorers.