The part of me that thinks somebody somewhere is going to want to customize the scoring of the slot machine later, makes me like that you've put all the score values in a table.

I would clarify these 2 things in the Kata:

• The # of towns to visit is not a maximum value, but a required value. The prose led me to think that our weary traveller would be willing to go to no more than 3 towns, implying 1 or 2 would be fine.
• Visiting the same town twice isn't allowed. The data structure would make it hard to do this, but still I wasted some time thinking about routes that retraced steps, since this wasn't explicitly denied.