Celebrity Summit receives high marks for service, food, and overall cruise experience, with many guests praising the attentive staff, clean ship, and enjoyable itineraries. The ship's recent renovations are appreciated, and entertainment is generally well-received. However, some guests note inconsistencies in food quality, slow dining service, and occasional issues with cabin size or ship age. Excursions and specialty services are generally positive, though some find them overpriced or lacking. Overall, the cruise offers good value and a relaxing atmosphere, making it a popular choice for repeat cruisers.