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Cabin 3025 - Accessible OV - entry
Here is the entry. Wheelchair fit through door, not easily, but it made it. Closets have frosted glass doors (the other room I saw had solid wood). Not sure how this helps, but it is there.
I think it would be a struggle to open the closet door in a wheelchair, since the entryway is not wide enough to accommodate the width of the closet door and a wheelchair. This wouldn't be a problem if you had an AB person with you to get the clothes in and out of the closet.