During slot operations they will not let lighties in - Read the NOTAM.
Expect some extensive holding at times depending on runway configuration.
Weekends are reasonably quiet. Weekdays are pretty busy mornings/noon/evenings are very busy.
Also can be a walk from GA apron to landside then to the domestic terminals. Also a hassle getting airside again, usually you need to get the safety officer to let you in.
A fluorescent vest must also be worn airside, they are very pedantic about it!
Read up on all your procedures, it can be very demanding - Even alot of instructors have never been into Perth.
Taxi from JT-PH domestic is $48 even less for international, you will save that on landing fee's. There is also a parking fee if you stay longer than a few hours. Look at their website
www.perthairport.net.au for all landing fee's . Remember there is also a hefty Airservices fee ($25 from memory on top of the steep landing fee's)
The odd lightie does fly in from time to time, it is a good challenge. Pm if you need more info