Explorer of the Seas receives generally positive reviews for its friendly staff, enjoyable itineraries, and family-friendly atmosphere. Guests praise the service and cleanliness, but note that the ship is showing its age and could use refurbishment. Food quality is mixed, with some highlights in specialty dining but complaints about variety and temperature. Entertainment is a strong point for many, though some found it lacking or outdated. Crowding and issues with excursions, water quality, and internet are recurring negatives. Overall, the cruise offers good value and memorable experiences, but there are areas for improvement, especially as the ship ages.