Some people plan birthday parties on Pinterest. I plan them in Google Sheets.
My son turned four this September, and it was his first birthday since we moved to Madrid from Bangkok. New city, new school friends, new language, and absolutely no idea where Madrid parents throw parties for four-year-olds. So I did what any former consultant would do: I opened a blank spreadsheet and treated it like a client engagement.
A little background on me: I've spent years in product management and consulting, most recently at McKinsey, where a well-built workbook is genuinely a love language. But I'm also a dancer and a creative at heart, so I wanted this party to look the part too.
Spreadsheet brain, meet mood-board brain.
Yes, it had tabs
By party day, my planning file had more tabs than some of the decks I used to build for clients. Click through a few highlights.
Guest list
Every child, how many grown-ups were coming with them, and any allergies or dietary notes. This tab quietly saved the day more than once.
Where the money went
After years in Bangkok, my brain still converts everything into baht, so I compared this party with his first three. Let's just say Madrid had opinions.
This wasn't our first package party, by the way. His second birthday in Bangkok was at Strong Kiddo, a kids' gym that handled absolutely everything. His third was a mix at The Little Gym: they ran the space and the activities, while we sorted the cake, food, balloons, photos and favours ourselves.
So was it value for money? Mostly, yes. The Madrid package cost about 2.4 times the Strong Kiddo one, for broadly the same promise: I supervise, they run it. And almost everything we did ourselves came in cheaper than Bangkok, from the food and favours to the photos, which our nanny filmed on my husband's phone.
Where Madrid stung was the room itself. In Bangkok, even a full package felt like a reasonable line. Here, the venue was the whole story.
My Madrid shortlist
Each venue got a Full-Service Score from 1 to 5. A 5 meant “they handle everything and I just supervise”. A 1 meant “lovely, but I'll be blowing up balloons at midnight”. It came down to three, plus one I'm keeping an eye on.
Katapum Salamanca
My favourite from the start, with lots of different activities in one place and a lovely atmosphere. The package covered two and a half hours of hosted play, a themed workshop, a mini disco and face painting, and they were happy for us to bring our own cake and extra decor.
The catch: prices are quoted before 21% VAT, and adult drinks have to be bought there.
CaSa Color Play
AlcobendasWe’d have had the whole venue to ourselves, and adults were free. But the extras added up fast: the full quote came to more than 3.5× the core package. No outside food, drinks or entertainers, decor setup charged by the hour, and a 20-minute drive.
Explora
Family caféThe closest thing to “do everything for me”, with science experiments, cake, decor and a little science toy for every child. But the maximum is 45 people. With 20 kids and their parents, we’d have been closer to 60.
La Casita by Mon petit monde
Arturo SoriaA house-like venue with indoor space over several floors and a big garden, more than 20 party themes, and the option to simply rent the space by the hour. Top of my list to visit for number five.
Or go fully DIY
You can skip the package entirely and just rent a space. Plenty of Madrid venues rent rooms by the hour, and the rest is easier to source than you'd think.
Balloons
Mis Globos delivers ready-made garlands and balloon columns across the Comunidad de Madrid, in whatever colours you like, and comes back to collect the frame afterwards. Note: image above is not from Mis Globos, it’s part of Katapum’s simple decors package, though Mis Globos could also easily build this for about the same cost or a little less.
Backdrop
Design your own with AI, like I did for my son's, then have it printed at a local copy shop. Ask for a matte fabric print so it photographs well.
Tableware & favours
A themed tableware set and a few craft supplies from Amazon go a long way.
The trade-off: you're also the entertainment, the timekeeper and the clean-up crew. Budget your energy as carefully as your euros.
What I learnt
Write the brief before you shop
Mine was one sentence: I want to supervise the party, not run it. Scoring every venue against that turned 21 maybes into a shortlist of four.
Count the grown-ups and siblings
Twenty kids is never twenty guests. Most come with one or two parents, and often a sibling too, so we were really planning for around 50 people. A couple of my favourite venues dropped off right here: plenty of room for children, nowhere near enough for their parents.
Read every line of the terms
This is where the surprises hide: no outside food, no outside entertainers, setup time charged by the hour, bring your own plates if you don’t order their cake, and a three-day deadline to confirm headcount. None of it was in the brochure.
Don't accept the first quote: keep, cut or DIY every line
Once a quote is broken down, the trade-offs become obvious. In one quote, decorations alone were close to half the total. The piñata got cut, the decor package shrank to the simple version, and our nanny's homemade brownies quietly stole the dessert table.
But it's not only about cutting. With a couple of venues, I even negotiated my own pricing for packages that weren't in their catalogue. Once you understand the unit cost of each line, it's much easier to ask for exactly what you need.
Send the invites a month ahead, even if the venue is still TBD
That way, people can block their calendars early. Start with the families closest to you and the friends your child definitely wants there, then invite the rest once the details are firm.
Give your creative side one big moment
With a little help from AI, I designed the backdrop artwork myself in his red, royal blue and white palette and had it printed at the shop downstairs. Because that one piece carried the theme, everything else could stay simple.
Probably a little. But here's the thing: the spreadsheet is what made the day itself feel easy. I wasn't worrying about drinks or who had a nut allergy, because all of that was decided weeks earlier. Afterwards, I even reconciled the drink coupons against the receipt (every single one accounted for), and I'll admit that gave me a small thrill.
Planning a party in a new city is part logistics and part leap of faith. A good spreadsheet doesn't take the magic out of a birthday. It just gives you the headspace to actually enjoy it.
