Norwegian Cruise Line said it will let guests make dinner reservations at specialty restaurants three months ahead of sailing.
Previously, the reservations window opened 45 days before the cruise.
Guests in the Haven, a limited-access area of suites on some ships, can book 100 days in advance.
Norwegian also said reservations can be booked on certain ships for entertainment and spa treatments up to 90 days in advance. The option applies to shows on Norwegian Epic, Breakaway and Getaway and spa treatments on Epic.
To make the reservations, guests can sign onto their My NCL account.
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