Celebrity Constellation receives high marks for its itineraries, friendly and attentive staff, and overall cruise experience. Many guests praise the service, cleanliness, and entertainment, but there are recurring criticisms regarding food quality and variety, aging ship facilities, and occasional issues with crowding and value for money. Specialty dining and excursions receive mixed feedback. The ship is recommended for its classic cruise experience, though some guests feel recent cost-cutting measures have impacted the premium feel.