Lady Antebellum has become focus of weekend

Country's big night has turned into one centered in large part around Lady Antebellum, but the trio has been too busy to be staggered by it.

Lady A, as fans know them, were set to play a Friday night concert on Fremont Street before finding out Sunday how many of the group's seven Academy of Country Music Awards nominations will translate into wins.

"We're trying to enjoy it and realize it will probably never be this fun again, because it's all so brand new," said singer Charles Kelley after the trio came off the stage following a Friday rehearsal at the MGM Grand Garden.

"You can't say no to these things," he noted of a jet-lagging schedule that has included a recent visit to "American Idol" and a sit-down with Oprah Winfrey. "It's busy, a lot of travel, but they're all like these opportunities of a lifetime."

Singer Hillary Scott said that fame hasn't soaked in yet. "We're really just completely normal people with a really weird job." She does admit to checking out concert footage fans post on YouTube "to see if I'm doing anything stupid onstage I need to change."

They measure fame in little ways. "John Mayer tweeted about us," Kelley pointed out. "I'm a big John Mayer fan. I'm trying to picture John Mayer in his car listening to 'Need You Now.' "

Lady Antebellum, as well as Keith Urban and Miranda Lambert, also devoted part of Friday's rehearsal to the songs they will perform in a separate special -- a Brooks & Dunn tribute -- on Monday.

Scott, 26, grew up watching Brooks & Dunn from the sidelines. Her parents, Linda Davis and Lang Scott, played in Reba McEntire's band during the years she toured with the duo.

"I got to see that show many a night," Scott said. "Talk about a feeling of things coming full circle, and feeling like, gosh, life has really prepared me to do this for a living."