One woman had sex in a 10-bed dorm room and on the outdoor balcony with another guest, and a group of students from Auckland vomited five times in five places and faeces were smeared in the toilet.
"The fee is likened to a normal accommodation bond a landlord charges or taking the credit card number in a hotel," Veale said.
She said Kiwis were hard to track in New Zealand even with their driver licence as ID, whereas international guests all travelled with a passport and so their movements could be tracked easily.
"This means if we do have to chase up for reparation after damage or theft - and we have had to - it is much easier with international guests."
Veale said all feedback had been positive so far, except for one guest, and two other local tourist accommodation owners supported the move.
"So out of an estimated 100 other Kiwi guests who are all mortified when they read the list that prompted the bond, one unhappy Kiwi is good odds."
Sarah Meadows, co-owner of Harbourside City Backpackers in Tauranga and Pacific Coast Lodge and Backpackers in Mt Maunganui, said Kiwi groups and Kiwi single men were the usual troublemakers.
"It's all to do with alcohol and the amount they consume and what happens after that."
Meadows said they did not have the same issue with international visitors "because they drink responsibly".
She said her backpackers did not charge a bond but groups of more than six people had to sign group assurance forms and provide credit card details.
She said a lot of bookings were done online so they had guests' credit card details anyway, "much like hotels".
They would also fine people.
"If they wet the bed, then we charge them for a mattress. If they vomit, we charge them $50."
Tony Bullot, chairman of Accommodation New Zealand, Bay of Plenty, said he had not heard of this type of charge before, "however if they are on firm legal footing all hospitality businesses should manage their risks as they see fit".
"Mount Backpackers appear to have gone about this the right way by discussing their issue with the Human Rights Commission and Tourism NZ before implementation," said Bullot, who is also the owner/operator of 850 Cameron Motel.
"They do not appear to be making extra money from or deterring Kiwis from staying, just trying to reduce damage to their property."
BAD BEHAVIOUR
• Man arrested for vandalism after smashing a window late at night.
• Woman assaulted another guest, stalked her around the hostel, burst in on her while she was sitting on the toilet.
• Man demanded to be able to vape indoors, became aggressive and drunk, played loud party music by himself at midnight in the lounge. Belligerent, rude and threatening.
• A guest's Kiwi friend caught three times sneaking in when the door was opened by other guests and was lurking around the courtyard during the evenings trying to sell drugs.
• Woman arrested and trespassed for assaulting another guest over snoring.
• Women complained loudly about other people, left their dog locked in their car overnight and all day. Other guests complained about their loud phone calls and claims of murdering people and spending time in jail.
• Drunken group pushing and play fighting in the courtyard. When bottles were broken, the night warden asked them to tone it down and was verbally attacked for being a foreigner - "you can't tell me what to do in my own country", "you're not even from here". Group also got into a fight with another group of guests.
