Most counters have the facility to do this.You won't be able to check-in via the F counter, only JQ. Unless it's a QF club domestic.
AFF Supporters can remove this and all advertisements
Most counters have the facility to do this.
However, it's more the case that they either don't know how to do so, or if they do, they simply will not.
See this thread: http://www.australianfrequentflyer....rogram/strategy-get-early-jq-check-32055.html