Alaska cruises are among the most memorable sea-going vacations you’ll take but planning for one is a bit different from preparing for a cruise to typical warm-weather destinations. There’s the weather, but also budgeting for more expensive shore excursions, clothing and the perils of traveling by air. Here are a few tips to help make it easier.
The Weather
The weather in Alaska can fluctuate wildly, so be prepared. Since Ketchikan gets 333 inches of rain annually, you should expect some inclement weather, although I’ve sailed during a full week of sunshine. And remember, June 21 is the Summer Solstice, the longest day of the year in the northern hemisphere. Since Alaska is so far north, the sun rises much earlier and sets much later than you can imagine. From mid-June through July, you’ll have extremely long hours of daylight. Nonetheless, days may be chilly,rainy or warm and sunny.
What to Wear and Take
Take along clothes you can layer, including cotton sweaters or sweatshirts. I consider a waterproof poncho with hood a necessity (it folds up into almost nothing, so it won’t take up much luggage space). My standard packing list for a seven-day Alaska cruise: four pairs of cotton pants, two pairs of shorts, five T-shirts, a cotton sweater, baseball hat and rain poncho. At night, I suggest keeping it simple since Alaska is a much more casual destination. For formal nights, women can made do with one long black skirt or evening pants plus tunics and scarves and jewelry to look dressy. 
I purchase most of my daytime clothing at Lands End. My other must-take items: binoculars, suntan lotion, a camcorder and/or camera plus tripod. Avon’s Skin So Soft, sold in many drugstores, is a terrific insect repellent, often necessary during July and August. Athletic shoes or good walking boots are also critical.