Tiles: they're not a ready-made Tiled or Godot terrain set. Each of the 3 transitions (grass to gravel path, brick pavers and pond water) comes as 12 separate 32x32 PNGs: 4 edges, 4 outer corners and 4 inner corners. Together with the plain floor tile that's the full set a terrain needs. The file names say where the second ground sits (_n, _ne, _ine and so on, explained in the README), so dropping them into a Godot terrain or a Tiled Wang/terrain set is quick, but you assign them yourself.
Visitors: they're single static poses, there are no walk frames in this pack.
Thanks for the questions