Bloomberg – When Li Yu wanted to take a gambling trip, she looked into Macau but found the hotels too expensive. So she booked a room on an overnight casino boat that sailed about an hour from Hong Kong into international waters before opening up its baccarat tables. “I don’t care about the food or other amenities, my sole purpose is to gamble,” said Li, a housewife from nearby Guangzhou who played into the early hours of the morning with about 70 others in the ship’s cramped casino. “It’s way cheaper than going to Macau.” Surging demand from mainland China…