Haw. Rev. Stat. § 281-20: General right of inspection.

Any investigator may, at all times, without notice and without any search warrant or other legal process, visit and have immediate access to every part of the premises of every licensee for the purpose of making any examination or inspection thereof or inquiry into the books and records therein, to ascertain whether all of the conditions of the license and all provisions of this chapter are being complied with by the licensee.