provided that the providing of liquor to or for a minor who has or is about to obtain liquor for consumption by the minor on the premises or allowing the consumption of liquor by a minor shall not be deemed to be a violation of this subsection if, at the time, the person providing or allowing the consumption of liquor was misled by the appearance of the minor and the attending circumstances into honestly believing that such minor was of legal age and the person acted in good faith, and it shall be incumbent upon the person to prove that the person so acted in good faith.
HRS § 281-4
Injunction against enforcement without showing direct invasion of property right. 39 H. 23.