Our experience with couples has been mostly frustrating.
We've only successfully met up with one couple. All the others have gone silent when we ask to meet, or don't show up. One had a really good reason for not showing up, but we haven't heard from them since....so....
We haven't had luck with single ladies. They seem to disappear when we try to arrange a meet,or they stand us up too...
Single guys, we'd say that 1/4 don't show. The rest at least show up for the meet!