They just switched me over, no need for an engineer or anything.
^That...
Since you already have an active fibre service they won't send an engineer over, so all you need to do is wire up what equipment you have, put the username and password into the router (the username is *username*@plusdsl.net (*username* is the username you used to create your account) and the password is also the one you entered when creating your account) and once the switchover has been done you'll be good to go.