I loved Atma grinding. I would start by soloing them, and then little by little someone else would join. Made a few new friends off of it as well.
People go to the extreme of "ohhhh gawd!! atma grinding!!! gotta sit here for 8 hours in one area and then complain when one doesn't drop!!! eerrrr"
My advice? Do a few fates in an area, didn't get one? move on to something else and come back later.
Also pretty much all fates can be soloed at that point, and if you have two people they are a breeze. So if and when people slowly stop doing them in bunches, you will be fine.