Avalon river cruises receive overwhelmingly positive reviews for their exceptional service, high-quality food, comfortable accommodations, and well-maintained ships. Passengers consistently praise the professionalism and friendliness of the crew, the cleanliness of the ship, and the memorable excursions. While most experiences exceed expectations, a few guests noted issues with certain excursions, internet connectivity, and occasional large tour groups. Overall, Avalon is highly recommended for a first-class river cruise experience.