It means all the cabins and reclining seats (in a reserved lounge accessible by a keypad entry lock) are booked.

Yes, Brittany Ferries offers reserved reclining seats as a budget-friendly alternative to private cabins, particularly on daytime crossings and shorter overnight routes. These seats are typically located in dedicated, quiet lounges and are designed to tilt back significantly further than a standard airplane seat, often including an adjustable footrest. On larger ships like the Galicia or Salamanca, these "Air-Style" seats are grouped in small sections to maintain a peaceful environment. While they provide a degree of comfort, many travelers in 2026 find them difficult for a full night's sleep compared to a bunk bed. It is important to note that on overnight crossings, booking either a cabin or a reclining seat is often compulsory to prevent overcrowding on the decks. If you are traveling with children or have a long drive ahead after docking, most seasoned ferry travelers suggest that the small extra cost for a cabin far outweighs the "half-sleep" you might get in even the best-quality reclining seat.