Lunch Stamp Card: Fill Empty Tables on Friday
Every week without a stamp card, you lose lunch guests to competitors without noticing. Set up in 5 minutes, free up to 100 guests.
Your lunch guests come two to four times a week, always between noon and 1 PM. The problem isn't frequency—it's the gaps: Friday with remote work, Monday with weekend leftovers. A digital stamp card closes these gaps with push messages at 10:30 AM, exactly when the office decides where to eat. Here's the mechanics with sample math, the checkout flow, and the automations that put today's special on the lock screen.
Why lunch guests are one of your most loyal groups
The typical lunch guest comes two to four times a week, always in the same time window. The bill runs €8 to €14: daily special, drink, sometimes dessert. The decision happens just before, often as a team: "Where should we go today?"
That decision moment is your lever. If someone knows at 10:30 AM what you're serving today and has three stamps left until a free meal, they pitch you to the group. A paper card can't do that. A Wallet card can.
The second pattern: lunch has hard boundaries. Nothing happens after 2 PM. Since remote work became common, Friday—often Monday too—is noticeably slower than Tuesday through Thursday. Closing those gaps is the real job of the card.
How it works: 10 stamps, one free lunch
For lunch service, canteens, and workplace restaurants, we recommend:
- 10 stamps, one stamp per lunch from €8 and up
- Reward: one free daily special (not the premium dish, not the drink)
- Cooldown: one stamp per guest per day (meaning each guest can earn only one stamp daily)
The math:
| Item | Amount |
|---|---|
| Average bill per visit | €11.00 |
| Revenue over 10 stamps | €110.00 |
| Food cost of free daily special | ~€3.00 |
| Effective discount | ~2.7% |
Just under three percent for a guest who's come ten times, usually within a month. And on the eleventh visit, they typically buy a drink and dessert again, which lowers the discount even further in practice.
For high-volume canteens (daily traffic), 12 stamps can work too, since the card still fills in three weeks. The rule of thumb: the card should fill within one month. More on this at How many stamps until reward?.
How to roll out the card during lunch rush
Between noon and 1 PM, every second counts at checkout. So prep the rollout outside that window:
- QR code along the queue. On the menu board, on the wall, at the serving counter. Guests standing in line have their phone in hand and three minutes to spare. That's the moment to sign up.
- QR code on every table. Seated guests have even more time. A small stand or sticker per table works.
- Stamp at checkout. Guest shows the card, your team scans with their phone. No stamp pad between tray and card reader.
- Stamp groups individually. Lunch guests often pay separately, but sometimes one person buys for the group. Rule: each guest with a card gets their stamp if a lunch was included for them.
- Launch on a Tuesday. Not Monday, not Friday. Tuesday through Thursday the queue is full and your team is in rhythm.
The ready-to-print stand comes from the system—see QR code stand for checkout. For lunch service, an A3 version for the wall is worth it too.
Automations: The daily special on the lock screen at 10:30 AM
At lunch, there's one moment that decides everything: the half-hour when the office figures out where to eat. The automations target exactly that:
Daily special via push. Around 10:30 AM, a short message: "Today: cheese noodles with salad, €9.50." It lands as a Wallet notification on the lock screen of guests who opted in for marketing. It's the most direct path to the lunch decision there is. More at Lock screen marketing.
Slow-day boost for Friday. Friday morning: "Today: extra stamp on every lunch" or "Friday: free dessert." This brings back some of the guests who'd otherwise eat a sandwich at home. Same works for Monday.
Win-back. Someone who came three times a week and disappeared two weeks ago changed jobs, is on vacation, or eats elsewhere. A reminder with an extra stamp costs nothing and brings back the travelers and job-switchers.
Birthday. A free lunch on their birthday almost always brings the whole team. That's the cheapest group table you'll get.
Flash sales for leftovers. 1:30 PM, 15 portions left: "Until 2:30 PM: daily special €3 off." Better than the trash.
Geofencing. Guests with the card near your restaurant get a reminder around lunch time. For lunch spots in office districts, this is your direct line to people deciding right now. (Geofencing = automatic message when someone enters your location's radius)
Self-test: Are you losing lunch guests?
- Do your regulars come less often on Friday than Tuesday through Thursday?
- Do your guests know at 10:30 AM what you're serving today?
- Do you have a way to win back guests after two weeks away?
- Can you target leftover inventory to regulars in the afternoon?
- Do you know how many of your lunch guests come twice a week versus four times?
If you answered no to two or more, you're losing lunch guests to competitors every week—and you don't even know it.
What happens if you do nothing
Without a stamp card, lunch runs like this: your regulars come two to four times a week, but you don't know who comes how often. Friday is empty because many work from home. When a guest disappears for two weeks, you don't notice—and can't do anything. The office decision goes to a competitor because they sent a message at 10:30 AM. And you throw away afternoon leftovers you could have sold with a quick message.
Common stamp card mistakes at lunch service
- Reward with no limits. "Any dish of your choice" means someone picks the €18 steak. The daily special as reward keeps food cost at €3.
- No morning message. The daily special at 10:30 AM on the lock screen is your biggest edge over paper. Without it, you're using half the power.
- Stamp for drinks alone. An afternoon coffee isn't lunch. The €8 minimum keeps it clean.
- Stand only at checkout. Nobody in the queue looks at the checkout. The code needs to be along the queue and on tables.
- Launch during rush. Starting the card Monday at noon overwhelms your team. Prep in the afternoon, launch Tuesday.
- Cards that are too long. 15 or 20 stamps take two months or more at two visits a week. Ten is the right number.
Conclusion
A stamp card for lunch and canteens leverages your most loyal customer group and closes the gaps remote work created: 10 stamps from €8, one free lunch, QR codes along the queue and on tables. The 10:30 AM message with the daily special and the Friday boost do the work nobody has time for before the lunch rush. With stampa, it's free up to 100 active guests and needs no credit card. Set up your card now in 5 minutes: Create card now.