(1) The tax shall be added by each operator to each invoice that the operator prepares and gives directly, or transmits, to the transient for the occupancy of the operator's hotel.
(2) The tax so invoiced shall be collected from the transient by the operator and remitted to the municipality.
(3) When a person has maintained occupancy for thirty (30) continuous days, that person shall receive from the operator a refund or credit for the tax previously collected from or charged to that person, and the operator shall receive credit for the amount of such tax if previously paid or reported to the municipality.