When you mow yards professionally how much weedeating do you do, and how perfect do you make the yard?

Do you worry about weedeating around every tiny little thing every time? As in all trees, all of the house, etc etc. How perfect do you get it? Make sure its perfectly level with the yard and get every single blade of gr cut? how about gr stuck in fences or in between rock/pavers that the weedeater string cant get to? Do you edge the driveway and sidewalk every time? Or just trim? When mowing do you ever get a few blades of gr here and there that dont get cut when the blade hits it? Is that ok? Do you go back over it again or leave it be? This happens to me alot, even when mowing slow but you have to be looking and focusing on the yard to notice them. Ive never had complaints, but i am a bit of a perfectionist and I am wondering how perfect I really need to make the gr. My mower is a Dixie chopper 20hp 42" with gator blades and I think the blades need to be sharpened with a different angle and a stiffer spring for the belt tension since it doesnt cut as well on the discharge side of the deck, the blade farthest from the tensioner .