As winter morphs into spring, more vacationers will be shoring up their summer getaway plans. By mid-spring, availability and cabin choices will dry up, leaving slim pickings if you have a specific stateroom category in mind. The big message here: If you're looking to sail next summer, we suggest booking ASAP.

May and September departures offer the best pricing. During these months, temperatures are lower than in June, July, and August -- and so are the costs. Plus, you'll also avoid larger crowds in port.  

There's so much nature and adventure off the coast in Alaska, which is why combining a sailing with a land tour is highly recommended. Several cruise lines offer this option, including Holland America, Princess Cruises, and Royal Caribbean International. Denali National Park, for example, is a favorite add-on for cruises that begin or end in Anchorage or Fairbanks.

The weather in Alaska is tricky. On mid-summer days, temps can reach the mid-60s along the coast, though, in the evenings, you'll want a sweater or jacket. Planning to dress in layers is a good idea in general, so be sure to pack lightweight and warm clothing. A rain jacket or windbreaker with a hood is a must, as are walking shoes or hiking boots. Finally, know that it can get chilly in May and September, with daytime highs in the low- to mid-50s.

After all, Alaska cruises are all about experiencing the destination, and shore excursions will sell out fast. So, be sure to make your selections as soon as possible after booking the cruise.  That way, when you board the ship, your excursion tickets will be waiting for you in your cabin.