Hello, Qi Yong,
Welcome to planDisney. Thanks for the opportunity to dream along with you about future cruises aboard the astounding Disney Adventure. I'm excited to try out this beautiful ship someday too! This morning, my family and I disembarked from the Disney Wonder, which just completed a transit of the Pacific Ocean from Sydney, Australia to Vancouver, Canada. Coincidentally, the Adventure was crossing the Pacific around the same time as the Wonder, but in nearly the opposite direction. It's exciting that Guests like you and me will soon be able to board the Adventure and see firsthand how much magic it surely has on board.
It's a big blue world out there. But as Dory reminds us, I simply need to "just keep swimming, swimming, swimming." After much searching, I found some information that I hope will be helpful to you. It looks like Deluxe Garden View Staterooms on the Disney Adventure (stateroom categories 05A and 05B) feature themes from Iron Man, Finding Nemo, The Lion King, The Little Mermaid, Spider-Man, and Up. Any of them would feature an amazing view of the Disney Imagination Garden. Rooms in that category that I have recommended in the past include 11677, which features an Up theme, or 11373, which has a Lion King theme.
If you are set on both a Garden View Stateroom category and a Frozen theme, I would strongly recommend any of the Category 07A staterooms that are adjacent to the Category 05B staterooms. Those Category 07A staterooms are described as Staterooms with Verandah, so they are slightly smaller-sized than the Deluxe Garden View Staterooms with Verandah. But they still happen to also overlook the Imagination Garden so you can soak up the magical atmosphere and views of that space, including the castle wall, from your stateroom verandah. The stateroom numbers for Category 07A which also overlook the Disney Imagination Garden are 11331, 11631, 12331, 12631, 13331, 13631, 15331, and 15631. Themes and stateroom categories are subject to change. So I also encourage you to call Disney Cruise Line directly to confirm the current information about a given stateroom before you reserve it.
I hope that helps with your Disney Cruise Line vacation planning, Qi Yong. If you have any more questions before you set sail on the Adventure, feel free to swim back to planDisney for more support.
Have a magical time, Qi Yong!
~Tony