Regent Seven Seas Mariner receives high praise for its attentive service, luxurious accommodations, and overall cruise experience. Guests consistently highlight the professionalism and friendliness of the staff, the comfort and cleanliness of the ship, and the quality of the excursions. However, some aspects such as food quality, entertainment, and shore excursion organization receive mixed feedback. Internet connectivity and value for money are also noted as areas for improvement. Overall, the ship is regarded as a top-tier luxury cruise option, though not without some inconsistencies.