I am seeing reports from people on how the new Queue Re-entry feature will work (it depends on the ride). Many people have called these reports RTQ, but that is actually not the name of the accommodation, it is Attraction queue re-entry (AQR). Return to Queue according to an operations CM (I reposted their description of each accommodation earlier) is like getting a return time with
DAS 1.0, they give you a time to come back to ride and you enter the Lightning Lane.
These are not my reports, but I thought it is useful to share with others so they have an idea of how it will work:
Space Mountain
I saw another one for Pirates but can't find it to cut/paste - but essentially the person was told they would have to push through the queue twice, once to get out and once to get back in to find their party if they had to leave the line.