My legs died walking all over the place to collect the stamps in the Stamp Rally and get Jōtarō's disk, but I got it in the end, thanks to the really nice Ojisan who helped me find the second half of the stamps (I helped him with his first half of the stamps tho!)
More pics:
https://at.tumblr.com/takarai-karin/696990130069782528/ex5p6mn3m8yihttps://www.tumblr.com/takarai-karin/696990508194594817?source=share