Currently, we have a couple of DISers signed up for the Jan 31 - Feb 6, 2015 Costa Rica trip. It's no longer on
ABD's schedule, so I'm assuming it's full. (But that is just an assumption). It's also an Adults Only departure, so I guess that wouldn't help you.
So far, no one has posted that they are on the Feb 14 - 20, 2015 trip (which I assume is the one you're looking at). If you like, you can post over on the Costa Rica Meets thread once you've booked, and who knows, someone else may turn up!
http://www.disboards.com/showthread.php?t=2933891
I know some people have had luck talking to ABD to find out the ages of any kids already signed up for a particular departure. Perhaps you or your
Travel Agent could try that, also.
Sayhello