I do....go over everything including the fingerboard with a fluffy static duster every time I change strings.
I don't ...do anything else.
If I do have sweat or drink marks left on my guitar after a gig I might take a wet paper towel and wipe it clean. Shout out for poly finishes...
DO - Liberally apply malt based cleaner under strict gig conditions
DO - Polish to a lustrous patina using a soft cloth
DONT - Attempt this too often as it's time better spent practicing those clams you blew the previous nite
1.) Wash hands every time before playing.
2.) Wipe strings down with old T-shirt every time after playing.
3.) Use guitar polish or cleaner (I use Virtuoso) only when guitar body and back of neck need it.