For clarification, how broadly is "general area" being taken? Like I assume you mean no summoning from opposite sides of the island, and definitely not summoning from one city to another, and so on. But if Ritsuka were off someplace near the outskirts of Verens (like at the lake or such) would that be close enough to summon a servant to that location, provided said servant isn't someplace like the far opposite corner of the city somehow? Just trying to get a rough mental image of the sort of effective radius I'm working with.

(I doubt this is likely to come up anytime in the near future, I just like to know things in case it ever does!)