That’s consistent with Sam’s station as a humble gardener, not a member of the loose aristocracy class like Frodo or Merry and Pippin, who had the leisure and wont to go out a-walking just for fun - and also those latter had relatives near the south of the Shore, and so would have reason to visit the area.
Their local field that is multiple days’ travel away and further than Sam has ever been (and they all know who Farmer Maggot is).
That’s consistent with Sam’s station as a humble gardener, not a member of the loose aristocracy class like Frodo or Merry and Pippin, who had the leisure and wont to go out a-walking just for fun - and also those latter had relatives near the south of the Shore, and so would have reason to visit the area.