we just did the Remy one for FW on our Oct trip. You do have to go to each pavilion. Usually they have a few extra ones to find at the booths that are near the entrance to Future World, (like Flavors/Fire,) but not this time, just one Remy per country. It took a while to do, as you will have to make the circle. We got our maps in the shop just inside at IG near France , and also turned in there. I think you can also buy/turn in at the shop at the entrance to WS from FW (in between Mex/Can) Also, if you spot one, but haven't bought the map yet, take a picture! Some Remys were easier to spot than others, won't give any away, but for some, you do need to walk well into the pavilion to find.
We will have a half day to do Olaf on our check out day.....hope we can finish!