User blog comment:LegoMaster2149/How to Get Your Pasta Rough Draft From the Writer's Workshop Onto the Wiki/@comment-24101790-20150925145711

It can take a few hours to a couple of days. It really depends on who's reviewing stories and if what you posted catches their eyes. Once they write a review, the time it takes to revise it really falls on you so I can't say how long that process'll take.

If you have difficulties getting reviews, I would suggest looking over other stories in the WW and finding a reviewer whose style is conducive to your own and messaging them.