Usually 2 - 3 days, sometimes 4 - 5.

I don't worry about it though as I'm rarely waiting for the points to turn around and use them immediately.

Out of probably 400 stays over the past 5 years I've probably had 1 where I had to make a request for the points/nights so I don't pay too much attention as the system seems to work and even if there's a couple day delay they eventually post.