If you anticipate a dispute over an upcoming visitation exchange, some attorneys recommend sending the other parent written notice in advance, restating the date, time, and location from your court order and asking them to confirm the child will be ready.
A notice like this can help establish, in writing, that you gave the other parent fair warning and a chance to comply before any enforcement action — but the specific wording matters. Ask your attorney to help you draft one rather than using a generic template, since it may be referenced later in court.