No, the main difference between a "Non-O" and a "Non-OA" visa is that a Non-OA visa is a multiple entry, and a "O" visa is "single entry". However, with a Non-O visa, you can get a one year extension of stay, and a re-entry permit.
Tod Daniels wrote an excellent post about the difference between the "retirement" visas. You can find the post at
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