"I risk a fine as well as Boom Brothers if we sell to underagers, so we have to be really careful," he said.
Mr Quinney said it was the first time Boom Brothers had opened a Wairarapa pop-up operation and he was considering staying open until midnight to maximise sales.
Most of the fireworks sold at Boom Brothers are in packs such as Armageddon Assortment and includes a $200 pack called Asylum that had been popular at the Masterton store.
Department of Labour spokesman Mark Smith said the government agency monitors the retail sale of approved fireworks, which can be sold only from November 2 to 5.
Mr Smith said buyers must be aged 18 or older and had to produce proof of age on request. He was not aware of sales breaches or any enforcement action in Wairarapa.
