FY 2018 Per Diem Highlights GSA establishes the per diem rates for the lower 48 Continental United States (CONUS), which are the maximum allowances that federal employees are reimbursed for expenses incurred while on official travel.
Rice wine vinegar and rice vinegar are different names of the same thing. In order to make vinegar, acetic acid bacteria ferment ethanol, which would be rice wine in this case. Rice wine and rice cooking wine are different.
Mirin is a rice wine, kind of like sake, but less alcohol and more sugar. It is a common Japanese condiment and also used in cooking many Japanese foods. I believe rice vinegar is more acidic and has less alcohol content than mirin. Mirin is a sweet cooking wine made by fermenting rice. The alcohol context is extremely low, so it is not considered an alcoholic beverage. It is almost exclusively used for cooking. Rice wine with a higher alcoholic content is called sake, and can be used for cooking also, but is usually made to be drunk.