To dream of a cabana suggests a need for distance from a situation in your waking life.
To dream of a cabana by the sea implies that you may be responding emotionally in a situation that requires rational thought.
A cabana denotes the need to calm down and approach a situation in your waking life from a place of deeper acceptance.
Dreaming of joyful activity in and around a cabana may be indicating the importance of some alone time before undertaking a task away from home.
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