Wait until it finishes connecting, and wander around with the arrow keys (and very hopefully find someone else in there).
Small little tech demo I thought I could make. I dunno if it's very reliable right now though, since I've been seeing that sending the player's data often ends consuming it's length; could also randomly end the connection at points but when I tested it with a (self) player clone it seemed to work fine. Hope it does if more than two people join there. Decided not to add a host because it could end up being kinda disasterous. Hope you enjoy!