Cross quoting from Supercharger thread:
Not at the Star; casinos get away with a ton of stuff and would have just hooked it up to their power anyway. Not too much major work involved, unlike digging up parking spaces in semi-public areas for a few days and installing outside electrical equipment like most SCs.
Edit: Speaking of Superchargers...
(Citipower electrical substation which the building to be the Tesla workshop is built around)
And also these pictures. Sadly the building isn't as nice as the Sydney service centre/show room just in the way it was built, no double height windows etc. However, with it being so huge I think they have a lot of space to work with in the future, I can't tell if Tesla bought this building, but given the amount of changes and infrastructure being put in such as the superchargers I can only assume it is at least a long term lease. It is unfortunate it isn't visible from Church Street like many of the other auto showrooms in the area (Zagame's Lamborghini, Ferrarri, Audi and Maserati locations are on Swan street not too far away with new high profile showrooms) so they will have less brand awareness from people passing by unless they work in the same business park area (or see the cars out on test drives)
I think the northern half of the building will be the customer delivery area, where they will put some doors into the glass walls to allow cars out, you can already see three new metal support beams (second picture below) for a door system to hang from. While the southern side with the superchargers will be the show room. There is one delivery bay for the workshop on the south side (as seen below) while the north side has two large doors.
Edit: Note that the number of carparks dug up is 9 (plus some landscaping), although I assume they will rebuild a curb/gutter and put signage on that Dale Street fronting carspot and probably use the one closest to the entrance for plantings/landscape or signage, so expect room for an estimated 8 supercharger carspaces, possibly made a bit wider if they don't use all the room from the remaining spot if they do build on those. 9 carparks on the other side too, although four will have to be removed for the customer delivery doors. There are three car parks on either side of the building at those undercrofts, those would probably remain staff parking though.
Looking inside, the top image is the northern end, where I think they will have two delivery bays for customers. It has three new metal support beams next to the windows installed, probably for large glass doors and I think they could easily put in a false wall between the workshop and the showroom for cars awaiting delivery to be moved in the right area. The southern (left as you enter) side of the room looks to be the main 'show room' area with room for a car or two, reception is in the middle as you enter with stairs up to offices on either side.