How Holiday Timing Changes the Plan
On Yom Tov, as on Shabbat, cooking and on-site work are scheduled to finish before the holiday begins, and multi-day holidays mean planning several meals as one sequence rather than separately. That shifts menus toward dishes that hold well and makes lead time more important than usual.
Requirements vary by family, community and supervising authority. For strict kosher events, the applicable rabbinical authority or mashgiach should determine the required procedures.