HelloThere: Surcharges should be banned. The extra costs should be built into the prices during the year. Imagine going to the supermarket or service station and they added 15% onto your bill. Also, I think that it's unfair that some business choose to shut or are forced to shit for today and the staff have to take AL or they don't get paid.
I am not aware of any countries that charge a holiday surcharge apart from NZ at things such as cafes. NZs prices are already high when compared to other countries and NZ doesn't have the best reputation for prices when it comes to tourism. I live in a tourist town and I heard some tourists complaining that all the cafes were shut, as they shut mid afternoon. IMO some for the attitudes when it comes to hospitality are not good.