I think in broad outline it can be roughly the same. Lots of details will differ of course.
Currently you have to download the iso and fish them out (we’ll fix this and publish them separately soon, I hope).
Yes.
Heh well… the best docs are at FoundationsTeam/AutomatedServerInstalls/QuickStart - Ubuntu Wiki and Netbooting the live server installer currently. The docs will get better over time, too.