It is well worth a visit, you can enter the dome via the ground level door to enter the public viewing room and display, lots of photos and info and possibly you may just get to see them setting up for observing.
It is good to know just what they are observing tonight
AAT Observing Schedule below:
https://aat.anu.edu.au/science/observing/schedules/aat
Looks like they are scheduled to be using the 2df + hermes instruments for GALAH
https://galah-survey.org/facilities
For deeper reading the Instruction manual for 2df + hermes instrument
https://aat.anu.edu.au/files/2dF-HER...s-manual_1.pdf