On the Wish deck plans, I think the small lines for each room indicate which side the bed is on (though I'm not sure which side is which). The small icon by stateroom 7146 means "communication stateroom" -- I'm guessing those rooms have additional accomodations to assist with hearing/seeing notifications so guests know when announcements are playing.
The lines at the door look like they indicate which direction the door opens, which as Mommb says above likely tells you which side the bed will be on. Based on the Dream/Fantasy, the bed would be on the open side of the door, with the closet on the wall behind the door.
Yes, 7146 on the Wish is a hearing-accessible or "communication" stateroom.
Communication Staterooms on the Disney Wish
The Disney Wish, which sets sail in 2022, will offer Communication Staterooms that have built-in communication features. If your party includes Guests with hearing disabilities who need such features, please book a Communication Stateroom. Portable communication kits will not be available on the Disney Wish.
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