Per Royal Caribbean
"Want to see Alaska but not sure how to navigate the last—and vast—great frontier of the largest state in the country? Since it’s more than twice the size of Texas and has more miles of coastline than all of the other U.S. states combined, yet fewer miles of public roads than the County of Los Angeles, cruising is a great way to go.
Alaska was one of the top destinations for cruising in 2016 because there’s no better way to take in the natural sights than from a Royal Caribbean balcony. With an expansive range of shore excursions at your fingertips, you won’t risk missing the attractions further inland, either. Here are five reasons you should explore the state by sea."