I have not been there lately.
A skilled driver could do the drive in an Outback. Of greatest concern is lingering snow and especially mud. Some of the big ruts and oblique washouts can be very slick when wet.
There was a nappy rope when I did it. If in a group bring 20-25 feet of webbing, have the last guy untie it, and spot him on the downclimb (which didn't look to bad). I brought 40 foot of webbing, lowered my pack, and went down hand over hand.
An interesting project would be doing it in reverse, and climbing the rap.
I found water in Royal Arch creek and in the river.
It's totally doable in a day, btw.