Hardcore fans can kick off the craic at 6:45 a.m. Saturday by cheering on Ireland in the Six Nations rugby match against England, all while enjoying some of Rí Rá Las Vegas’ delicious breakfast entrees. A little too early? The authentic pub at Mandalay Bay will offer a specialty menu of traditional Irish fare later in the day, including fish and chips, whiskey glazed salmon, beef and Guinness stew, and chicken boxty.