No sanding. I'm wondering if the small nicks and chips would go away with sanding? But trekk99ek is probably right, 2000 grit is vet fine. I had a friend who did it with 1000 and lots of water and he scratched his very badly.
another way is to wet sand 2000 then 2500 then 3000 then polish out the fine scratches it will turn out like perfect i have done several with excellent results or if you dont want to sand if you have a high speed buffer and a wool pad along with some heavy compound you might get some out but not all hope this helps