Explorer of the Seas receives generally positive reviews for its service, food, and overall cruise experience, especially for families and first-time cruisers. Many guests praise the friendliness of the staff, the cleanliness of the ship, and the variety of activities. However, there are recurring complaints about the ship feeling dated, inconsistent food quality, crowded public areas, and issues with water quality in some cabins. Entertainment and excursions receive mixed feedback, with some guests loving the shows and others finding them lacking. Pricing for extras and internet is often seen as too high. Overall, the cruise offers good value and memorable experiences, but there are areas for improvement, particularly as the ship ages.