An authorised celebrant to whom a notice of intention to marry is given in relation to a marriage under this Act must not solemnise the marriage—
(a) unless the celebrant is satisfied on reasonable grounds that the parties are the people who are getting married; and
(b) if the celebrant believes on reasonable grounds that any of the following documents in relation to the marriage contains a false statement or error, or is defective:
(i) the notice of intention to marry;
(ii) a statutory declaration accompanying the notice of intention to marry; and
(c) unless there are at least 2 witnesses who are, or appear to the celebrant to be, adults.