One annoyance was that I couldn't figure out how to set up a persistent room protected by a code. My goal was to have no usernames or passwords, but without allowing completely open access - I just wanted to distribute a room name and single known password/passcode my friends could use to get into the room.
Since this didn't seem to be possible at the time, I settled for requiring rooms to have a "host," which is just me. That way I deal with a username and password, but nobody else has to. It does make it impossible for the rest of the group to play without me, but this isn't an issue for our situation.