For the most part, planes going to Detroit are for 3 purposes :
a.) someone coming to Detroit for Work, employer sent them
b.) someone returning to Detroit, after being somewhere else
c.) some coming to see a family member

When I lived out of state on the East Coast, I could fly a LOT of places cheaper
than the airfare back to Detroit Metro merely to see family, friends.

If your best buddy wanted to come to Detroit for a VACATION
where would you go, what would you do, that was not specific to an event ?
Spending hours and hours and hours in car, doing big mileage, doesn't cut it

What would bring someone to Detroit, spend their hard earned cash,
- If it was NOT related to a sports game, and NOT related to the casino ?