There has been frequent confusion on RFC about "any difference " between Rice
Vinegar and Rice Wine Vinegar. According to this Asian culinary site, they are
the same thing--just a difference in labeling. ("Rice Wine" is a different
matter. It is a wine and not a vinegar. It would be found in a wine shop, not
in the vinegar section or the Asian food section of your supermarket. )

" In recipes, rice vinegar is sometimes also called "rice wine vinegar."
So says this Asian culinary site.

http://chinesefood.about.com/library/bld_r.htm