On our last cruise we had the advantage of a very web savvy person who actually set up a webpage for our cruise...there we introduced ourselves with photos, hometowns, and where we were located on board, how many times we had cruised, basically however much info you wanted to share.
In the absence of this, however, it is still possible for a volunteer to gather this information from everyone who wants to "play" and simply put it in a post that others can see.
Even simpler is to pick two places/times for Dis meets, and then whoever can make it, makes it, and whoever can't, doesn't. On our last cruise we had an informal Dis "meet" in the terminal before boarding began, then one on deck 10during the sailaway party, and one Dis breakfast. That's probably too much for a four day (that was a 7 day cruise) but it's pretty easy to find folks wearing lime green (either shirts or Mickey heads pinned on backpacks, etc.) around a designated location. Sailaway is a good one, as most folks have already figured out where things are, survived the lifeboat drill, and are now ready to party! Plus, since it goes on a while, there's no pressure to show up at any particular time (this is vacation, after all, and lots of us are trying to forget about watching clocks!).
So, there are some ideas. If anyone feels compelled to orchestrate this, now's the time to come forward. If no one else wants to, I don't mind gathering and posting people's info---IF---big IF---our fellow cruisers want to share.
Let's here from the others then...do you want to try and arrange a meet or two and also share some info?