Comments are priceless. Apparently, thousands of fans were forced to seat in the stadium for hours, with less than 5% chance of game being played, just to 'milk the concessions'.
Vegas standard is refund since game did not go five innings on date scheduled, so books that adhere to Vegas Standard (i.e. Heritage for sure and I think BetOnline) gave refunds. Bookmaker requires game completed on date scheduled so also refunded. However, there are now many books with their own house rules for this, so check rules at your particular book.