The Blackcaps test against England at Edgbaston will host 18,000 fans a day, after the match was chosen as one of the British Government's pilot events to allow bigger crowds.
The June 10-14 test - the second in the two-match series - will be the first event in the second phase of the government programme assessing the risk of COVID-19 transmission at mass participation events.
The 18,000 fans represent 70 percent of capacity at the Birmingham ground, compared to current guidelines that limit numbers to 25 percent.
To gain entry to the ground, each ticketholder will need to present a negative NHS lateral flow test, taken within the preceding 24 hours.
But spectators under the age of 16 have been barred from attending, due to medical consent issues.
An Edgbaston spokesman says just over 2000 tickets of about 70,000 had been sold to U16s across all five days, before the ban.
"We would have loved to have U16s, it's an unfortunate downside of the protocols," he says. "You want as many children as possible to see test cricket."
Purchasers would be offered full refunds, upgrades of child tickets to adult ones or amendments to their bookings.
The same rule will apply to Royal Ascot horse racing from June 15-19, which has also been selected in the second phase, with 12,000 people admitted each day.
The first Blackcaps v England test is scheduled for Lord's, starting June 2.
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