Las Vegas is a microcosm of the US economy, geared to the spending habits of the US consumer and thus facing an uncertain future. Lack of consensus on Sin City’s prospects was evident last week in the third-quarter results of its gaming companies, some of which narrowly escaped debt-related disaster this year. Wynn Resorts’ Steve Wynn rattled share prices with a gloomy prognosis for high-roller spending and downmarket regional operators echoed it. Yet, with MGM Mirage set to report on Thursday, convention specialist Las Vegas Sands ended the week trumpeting the return of group bookings, which bolster mid-week occupancy.