Most of what decides how busy you will be next Thursday has nothing to do with your restaurant. It is happening outside, it was published weeks ago, and almost nobody has it written down anywhere near their prep list.
Here is the shape of a Berlin trading year, as far as we can see it across the venues we work with.
Messe weeks
Berlin runs big trade fairs for a good part of the year, and their effect is strong, local and lopsided.
If you are anywhere near the Messe, near a main hotel cluster, or on a route between the two, a fair week can lift midweek lunch and early-evening trade substantially — and it lands on a Tuesday and Wednesday, which are otherwise your softest services. If you are in a residential pocket in Neukölln with no hotels nearby, the same week can do almost nothing.
The important part is the shape: fairs make your weekdays look like weekends and leave the actual weekend flat. A rule of thumb tuned to a normal week will be wrong on both halves.
Football
A home fixture at the Olympiastadion moves the whole western half of the city. Union at the Alte Försterei does the same in the east, on a smaller scale but with a more concentrated crowd.
Two things worth knowing. The effect is heavily time-shifted — a mid-afternoon kick-off empties the streets during the game and fills them hard afterwards, while an evening game does the reverse. And it is directional: venues on the route between a station and the ground do very well, venues three streets the wrong way do not.
School holidays
The most consistently underestimated item on this list. Berlin's school holidays change the composition of your customers, not just the number of them. Families disappear, lunch trade thins in residential areas, and anywhere near a tourist route picks up. Six weeks in summer, plus a fortnight at Easter, a week in autumn and the Christmas stretch.
Because the effect differs by where you are rather than by how big you are, no general rule works. It has to be looked at street by street.
Public holidays, and the days either side
Everyone knows a public holiday trades differently. Fewer people plan for the days on either side, which behave nothing like the holiday itself.
A Thursday holiday turns Friday into a second Saturday for some venues and a ghost town for others, depending entirely on whether your trade is local or working. Tag der Deutschen Einheit, 1. Mai and the run of spring holidays are the ones our venues get most wrong — usually by treating them as a normal weekday with slightly fewer people.
BVG strikes
Short notice, large effect, and unusually asymmetric. A transport strike does not simply reduce trade across the city — it concentrates it. People do not travel across town, so they eat locally. Neighbourhood venues can have an unexpectedly strong day while anything relying on people arriving from elsewhere has a terrible one.
Strikes get announced a few days out, which is exactly the window in which you can still change an order.
Demos, marathons and street closures
Berlin closes streets more than most European cities. The 1. Mai demonstrations, the marathon, Karneval der Kulturen, CSD, and a steady run of smaller marches. Each is either excellent or catastrophic for you depending on whether you are on the route or one street behind the barrier.
This is the category where being on the right side of a road closure is worth more than anything you could do with your menu.
What to do with all this
You could keep a wall calendar, and plenty of good operators do. The trouble is that it needs maintaining, it lives in one person's head, and it never quite reaches the person writing Tuesday's order.
The alternative is having it arrive with your numbers. BentoPlan tracks all of the above for your specific address — not your district — and folds it into the covers we expect you to do. When something unusual is coming, you get told three days out, while the order can still change.
Either way: the city is the biggest single thing moving your week, and it is entirely knowable in advance. That is a rare combination, and it is worth using.