Advance filing of Bill of Entry enables pre-arrival processing but late presentation attracts daily charges subject to waiver. Advance filing of Bills of Entry permits pre-arrival processing and is valid for thirty days from presentation; where feeder vessels are unknown, the mother vessel may be entered and the BE amended later. Prescribed filing time limits vary by customs station, and failure to comply attracts daily late presentation charges subject to a cap and to waiver if the proper officer is satisfied of sufficient cause or system-related faults.