Customer Feedback

How We Collected 600+ Event Feedback Responses in 2 Days Without Any Attendee Data

Updated On: Jun 19, 2025

4 mins read

Manisha Khandelwal

With SurveySensum, post-event feedback becomes your event's report card—revealing what worked, what didn’t, and guiding future success.
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When you don’t have attendee data, no registrations, and zero CRM access – how do you still collect meaningful feedback?

We still got 600 responses. Here’s how we made it happen.

Thousands of Attendees, Zero Data

A while ago, an e-commerce brand from Indonesia reached out with a simple request –they wanted to collect post-event feedback.

The catch?
It was free and open to the public. 

  • No ticketing. 
  • No sign-ups. 
  • No attendee database.

So… no WhatsApp numbers, no emails, no CRM list. Just thousands of attendees and no way to reach them once they left.

The Problem: How Do You Collect Feedback Without Data?

We brainstormed for days. 

  • WhatsApp won’t work. 
  • Email? Out of the question. 
  • Behavioral tracking? Too expensive.

Why Post-Event Feedback Often Fails

Most post-event surveys are sent hours or days later – and by then, attendees have moved on.
Response rates drop. 

Memory fades. 

Emotions dull.

That’s why in-the-moment feedback works.
It captures honest, emotional, and actionable responses while the experience is still fresh.

→ Don’t wait. Ask while it matters.

The Idea: Flip the Funnel – Feedback On The Spot

Then we flipped the question: 2 team members

  • What if we captured feedback live – right there at the venue?
  • What if we didn’t wait until after the event?

That changed everything.

The Solution: QR Codes + People On the Ground = Real-Time Feedback

We deployed an insanely simple setup:

  • Printed QR codes and placed them across key locations –food stalls, exits, chill zones.
  • Sent 2 team members to the event.
  • Their job? No signups. No forms. Just a simple question: “Scan this to share your experience.”

No heavy tech. 

No fancy tools. 

Just QR codes + human touch.

The Impact: Instant Fixes & Honest Feedback

Within hours of Day 1, feedback started flowing in – and not just generic stuff.

  • “The AC isn’t cooling in Hall B.”
  •  “Water stations are out of order.”
  •  “It’s hard to find the product showcase area.”

These weren’t post-event survey results buried in spreadsheets.

They were live insights. And the event team acted on the spot. By Day 2, problems were fixed.

The Real Gold? Brand Perception – Captured Live

Beyond the ops issues, we uncovered insights that marketing teams dream of:

  • Did attendees connect with the brand’s messaging?
  • Did the brand attract the right audience?

Did people feel something about the brand?

Feedback that would normally take weeks of post-event research..

we got there in 2 days – with just 2 people and a few QR codes.

The Outcome: 600+ Genuine Responses – Zero CRM

  • No attendee list? No problem.
  • Low budget? Doesn’t matter.
  • No automation? You don’t need it (yet).

This simple setup – powered by a couple of on-ground reps and a few well-placed QR codes – delivered 600+ valid, rich responses, shaping both immediate action and long-term brand strategy.

Repeatable Success: 20+ Events and Counting

That single experiment turned into a playbook. That one experiment has now been replicated at 20+ events – from auto expos to college fests to government conferences.

The results? Consistently strong.

What you need:

  • 1-2 volunteers
  • QR codes placed smartly
  • A dashboard to track responses live

That’s it. 

No rocket science. Just real-time insight, made simple.

The Only Variable? Your Willingness to Try Something New

So the next time someone says…

“We can’t get feedback – we don’t have attendee data.”

You know what to say:

You don’t need data to start. You just need access.
And maybe… a few QR codes.

Manisha Khandelwal

Senior Content Marketer at SurveySensum

Increase ROI by 3x with targeted feedback & analysis
Boost Customer Satisfaction by up to 20%
Reduce Churn by identifying pain points in real time
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