Likelihood of CZM not approving build of single dwelling on W1 or R3

I am planning to buy a lot in St-Croix but I see land pending and returning on market often so I am starting to worry about the CZM not allowing to build near the ocean on a W1 or R3? Any experience out there? Reason why they would not allow new dwelling to be build?

I see a lot of permit under review but not sure if these go through and how long it takes for a permit to be granted and what would be a reason not to grant such permit if all the standard and condition are followed?

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Please share your experience

Thanks