My son and I went for a week last December. I originally booked a studio, but changed to a 1BR, and I am so glad I did. I rented a car and we stopped at Don Don Donki on the way to the resort to stock up on groceries. They have traditional groceries of course, but also have Japanese and local options, too. Having a full kitchen really made a difference, even with just the two of us. And the laundry was a must. We were able to pack lighter, run a load when needed, and still came home with all clean clothes.
I do not think 11 days is too long. When we were leaving on day 7, I was wishing for a few more, just to hang out at the lazy river, lol! Seriously, if we had a couple more days we would have put them to good use exploring the island some more.
At WDW we almost always do studios, but Aulani I am a die hard 1BR fan now!
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