Retrieve server info without password

I am setting up a little project where a player may join a room or create one himself. The rooms are either public or password protected.

The problem is that I would like for all players to able to see some basic information regarding each room, namely: name, description, if it requires a password and the connected/allowed connections ratio.

I am aware that most of those I can get simply through the HostData retrieved when polling the master server, but the number of connected players is not one of them. I am also aware that the server knows the total connections (Network.connections.Length) and could make it available through an RPC call, but that would require a connection, which becomes a problem when there's a password requirement.

So is it possible for the player to request some information about the server without a password (even it is required)? Or would I have to just not password protect the connection and implement that on my own (using additional RPC calls to join a room and request a password, for instance)?