I normally do lots of different things too and hate doing many fates a day but since I know that my RNG is sometimes really horrible and because I still had some motivation left, I just powered through it. It was probably a little too much in those few days so maybe I should have spread them out a little more but after I got my first 8 weapons I was like "wanna finish it this week" and pulled it through. (Okay I needed monday too) Often I am quite the slow player, still did not finish the new anima part and normally take my time but this one was different. Hopefully I wont have to do such a thing again in the near future because it was not fun.
I agree with the problem of not getting any credits as a low level character with many people around and I can see this as a problem and source of frustration for new players too. They will try out this event or maybe even want to just level a bit but are barley able to get there in time (often don't have mounts). IMO it would have been better if every single zone (even HW zones) would have dropped those. People could have used it way better to level their character depending on their level and newer players might not have problems in getting the credits. You still could have like three weapons that you can only get in those low lvl zones but at least there would have been more choices. But well its to late for that right now.