No. It's required to use the forums to apply to the server. There were a few people (who are close friends to FePython) that were allowed on the server before the forum was even running. They eventually had to apply on the forums to make it fair to every one else.
Now, there ARE people who go on the server who did not apply, or they're waiting for their application to be reviewed. We call these people serfs. They have no powers on the server at all. They aren't even able to talk to anyone that isn't an Admin/GM. The only thing they can really do is explore the worlds that are available to the server members (Commoners, Barons, etc.). You can tell who online is a serf by holding the TAB key and looking for the names that are typed out in grey (it can be hard to distinguish white and grey at first). If you're wondering about the other colors....
Serfs are grey.
Commoners are white.
Barons are green.
GMs are teal/light blue.
The Admin is yellow.
I hope this is helpful!!
P.S. Sorry if the colors are really bright!