Start here: the three decisions that unlock everything else
Almost every party question people get stuck on is downstream of three decisions. Make these first, in this order, and the rest of the planning stops feeling like a knot.
- The date and time. This determines which venues and vendors are even available to you, so it goes first.
- The guest count. This determines whether your home works, what catering costs, and how much supervision you need.
- The budget. Not a precise figure — a range you are comfortable with. Everything else is a trade-off inside it.
People commonly start with the theme instead, because the theme is the fun part. The trouble is that a theme chosen before the venue is a theme that may not fit the venue. Decide the frame first, decorate it second.
Eight weeks out
- Fix the date and a start time. Late morning suits younger children; early afternoon suits school age.
- Set a guest count range rather than a number. "Twelve to eighteen" is enough to book against.
- Decide home or venue. If venue, start looking now — weekend slots are the first thing to go.
- Set the budget range and decide which one thing matters most to you. Protect that; flex everything else.
- Check the date against the obvious clashes: school holidays, sports fixtures, other parties in the class.
Six weeks out
- Book the venue, or confirm the plan for your home including where twenty children will actually put their shoes.
- Book entertainment. Good performers are booked well ahead for weekend slots, and the popular ones go first.
- Agree the theme with your child. Write it down, because it may change and you want to know when it does.
- Draft the guest list properly, with parents' contact details, not just children's names.
Four weeks out
- Send invitations. Ask for an RSVP date roughly ten days before the party, and ask for dietary requirements in the same message.
- Order the cake. Give the baker the theme, the guest count and the delivery or collection time.
- Book any rentals: tables, chairs, inflatables, shade, heating. Confirm access and measurements now, not on delivery day.
- Plan the food in outline: what is for children, what is for adults, and what will be there for anyone with a dietary requirement.
- If the party is outdoors, decide the wet-weather plan now and write it down.
Two weeks out
- Chase the RSVPs you have not had. You will always have to chase some.
- Confirm every booking in writing: arrival time, duration, what they need from you, who to call on the day.
- Finalise the food order against the confirmed numbers, with dietary requirements listed explicitly.
- Buy or order decor, tableware, candles, matches, and party bag contents if you are doing them.
- Write the run-of-show — the minute-by-minute schedule. This is the single most useful document of the whole process.
The week of
- Re-confirm every vendor 48 hours ahead by phone or message, not email.
- Share the run-of-show with anyone helping, including the partner or friend who thinks they know the plan.
- Prepare a contact sheet: every vendor's mobile number on one page, printed.
- Check the weather forecast daily if outdoors, and decide your decision deadline for switching to the backup.
- Buy candles. Then buy matches or a lighter. This is the single most commonly forgotten pair of items.
The day before
- Do everything that can be done a day early: decor prep, party bags, drinks chilled, table laid.
- Charge phones and cameras. Clear space on the phone that will take the photos.
- Set out everything the party needs in one place so nothing is hunted for tomorrow.
- Decide who is doing what: who greets, who runs the activity, who handles the cake, who takes photos.
On the day
- Set up earlier than feels necessary. The first guest will arrive ten minutes early.
- Greet at the door with a clear instruction: where shoes go, where coats go, where to send the child.
- Run to the schedule, but be willing to bring the cake forward if the room is losing energy.
- Hand your phone to someone else for fifteen minutes so you appear in the photographs.
- Give a five-minute warning before the end. Children handle endings much better with notice.
The day after
- Return rentals or confirm the collection happened.
- Thank the vendors who did well — it matters, and it makes rebooking easier next year.
- Write down, while it is fresh, the three things you would change. Next year's planning starts here.