Auckland bars are heaving as Metallica prepares to rock Eden Park tonight - its first Kiwi concert in 15 years.

About 40,000 visitor nights have been booked for the sell-out concert, with the city’s hotels at 100 percent capacity.

Roads near Eden Park are closed until midnight.

Kingsland's Full-Time Bar manager, Shane Don, says business is booming this afternoon.

"We're stacked in here, everyone's kitted out like bogans, I'm kitted out like a bogan, and I honestly feel like I've walked back 30 years."

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