Clarity on order of Cleaning, Sanding, Brightening

Here and on the other help sections I have seen different orders of the process. I will be using the same stain I originally used (TWP101), but I would like to sand the whole deck due to some splintering etc. I will be using 60 grit, and RAD to clean and brighten. I really need to know the best step order, is CLEAN, SAND, BRIGHTEN? Or SAND, CLEAN, BRIGHTEN? My only other question is that if it is Clean, sand, brighten, will having multiple days bewteen the cleaning and brightening, because of the sanding, affect anything. Please let me know, and thank you for this resourceful site.