As to marking hardware for set up, that is the norm in touring situations. In a lot of cases, colored electrical tape gets used to denote which stand is which, to recall specific heights and alignments, and how it gets positioned when deployed. In some cases, each stand will be a different color.
I have toured a lot of "festival" situations where one drum tech will handle multiple kits. At that point he will have stage hands assemble hardware out of the case following his instructions. Each kit will have it's own rolling riser and color code. Once stands are assembled he simply tells stage hands that the red stands go to this riser, blue to this, yellow to this etc. From there it is a simple matter to correctly place everything and replicate each drummer's preferred set up. The techs that do this are very good and very OCD when it comes to prepping this stuff and dealing with the drums on a day to day basis. In a lot of cases, they are far more detailed than the drummer for which they are working.
My son and I just spent 5 hours at the warehouse yesterday de-prepping several kits from one of these types of tours. One of his jobs was stripping tape off of hardware, using Goo-Gone to remove tape residue and then cleaning with Windex. After that he cleaned all the cymbals. Special thanks to George Lawrence for unknowingly letting me borrow a cymbal display for my son to use after cleaning. Very handy I must say.