The dress for the ships common areas is resort casual. You will see EVERY thing out there. Anywhere from shorts, bathing suits, gym clothes, etc.
Dining Room Attire
Ladies should wear dresses, slacks, capris, anything that you would wear to a nice evening out is appropriate. For formal nights (there are 2) it is appropriate to wear anything you would wear to a cocktail party, holiday party, etc. (i.e. velvet pants, palazzo pants, sequined party dresses, etc) Also, if you intend on going to the Supper Club the dress there is Dressy Casual for all regular evenings and formal for the formal nights.
Men should wear slacks (i.e. Dockers type), sharp casual shirts (i.e. Polo shirts, button down shirts, mock necks, etc.). For formal nights it is appropriate for men to wear suits or tuxedos. Tuxedos are available for rent on board. They provide you with tuxedo suit, shirt, cummerbund, bow tie, studs and cuff links for $75. For an additional $10 you can rent shoes as well. Just go to (Carnival Tuxedo Rental) and print out the Men’s Tuxedo Form. Take it to your local tux shop and have them measure you. You can phone or fax your form in. They will bill your Credit Card of choice.
Alaskan Cruise Gear You can also find this information on the Packing page.
Wind Suits: These can be a staple in some women's wardrobes and the nylon suits lined with cotton are ideal. You might want to add a pair of leggings under the pants if temperatures dictate something heavier. Under Armour makes "cold gear" and while it is expensive it is worth investing in as it will be the only items you will need under your jeans, sweaters, etc.. Dick's Sporting Goods sells these items!
Jackets: No, you won't necessarily need a down parka. With layers beneath to trap warmth, an anorak-type jacket, lined windbreaker, or a slicker (particularly useful if it rains) should be sufficient. Items made of Gore-tex are very effective at cutting the wind. Remember, with all the spectacular scenery, you'll want to spend some time on deck, especially the day your ship stops alongside a glacier. Extended time outside can mean you'll be cold if you're not properly dressed.
Accessories: Gloves and a hat or knit headband that covers your ears are necessary for that day at a glacier. You need to take layers including good rain gear, knit hat, gloves, and 2 pairs of waterproof walking shoes. Comfortable shoes go without saying—try to make sure yours are water-resistant and wear warm socks with them. Socks with “coolmax” technology are best as they “wick” the moisture away from your skin and keep your feet warmer longer!
Shoes: Comfortable shoes for walking around the ship. I prefer slip-ons, much easier to just slip-on and off when running in and out of the cabin. I also try and buy ones that have good grips on the bottom so that I don’t slide on the wet Lido deck!
Neck Wallet/Pockets: For the ladies, I recommend packing shorts/pants with pockets or making sure you have a neck wallet/travel wallet (ie. Neck Wallet). These can usually be found at your local luggage store or sometimes places like Wal-Mart/Target/Drugstores, etc. You will have to have your room key and that has all your charging privileges for on-board attached to it so you will need it to be able to purchase all things on board. The only place that accepts cash on board is the casino!