AT&T Cruise packages (brochure terms):

Eligibility: Compatible device with eligible domestic postpaid wireless service required. Charges: One-time charge of $60 per line for Cruise Basic package or $100 per line for Cruise Plus package. Package is valid for 30 days beginning on the chosen effective date, may cross 2 bill cycles, and expires automatically. Package charge will not be prorated if canceled on or after the effective date. If package is canceled prior to the effective date, the line will not be charged. Coverage: Package applies to cellular use onboard select cruise ships listed at att.com/cruise when sailing in international waters. When the device is connected to the ship's cellular network, "cellularatsea", "wmsatsea", "901-18" or "NOR-18" displays on the device. The ship turns off its cellular network when it is within 12 nautical miles from land and docked or tendered in port, at which point cellular service is provided via the nearest country. Countries: Add AT&T International Day Pass to your eligible domestic wireless plan to cover your usage when on land or in port. Go to att.com/intldaypass for details. Business and government customers: Add an available international roaming package to your domestic wireless plan to cover usage when on land or in port. Go to att.com/internationalforbiz  to review options. Data:  Includes 100MB of data for Cruise Basic package (smartphones only) or 1GB of data for Cruise Plus package (smartphones and tablets only). Actual data speeds vary by device and ship. Data use is subject to the same network management practices as your domestic wireless plan. See att.com/broadbandinfo for details. Data overage: If you exceed the amount of data in your Cruise package, additional data will automatically be provided in increments of 100MB for $10 each. Once you have incurred $100 in data overage charges or, for business and government customers, $300 in data overage charges, data use is subject to suspension, including data use on land, even if you have a separate international package for data usage on land.  Upon suspension, AT&T will provide notice and instructions for restoring data use capability. Talk: For phones only. Applies to all cellular calls dialed and accepted. Cruise Basic package includes 100 minutes of calling.  If you use all your Cruise Basic package calling minutes, additional cellular calls will be charged $1/minute. Cruise Plus package includes unlimited talk. Wi-Fi Calling: With Wi-Fi Calling enabled on eligible devices, you can call back to the U.S. at no additional charge. Unlimited Text: For phones only. Applies only to AT&T Short Messaging Service (SMS) and Multimedia Messaging Service (MMS) and not to other messaging services or applications that use data, such as iMessage. Messages received will be billed at your domestic messaging rates, unless you have a domestic plan that includes unlimited text. Pay-per-use rates: Apply when package expires, when traveling on ships not included in your package or countries not included in any international travel package added to your line, and/or when you have not added any package to the line. Go to att.com/ppurates to review rates. General: Subject to Consumer Service Agreement at att.com/csa or, for business and government customers, the applicable wireless service agreement. Availability, quality of coverage, and services while roaming are not guaranteed. Additional restrictions may apply.