This article outlines best practice for structuring mystery visit questionnaires.
The goal of a mystery visit questionnaire is to measure whether specific service standards were delivered during a visit, rather than to collect general opinions.
Well-designed questionnaires ensure that mystery visit feedback and results are clear, objective, and actionable, enabling clients to identify strengths, service gaps, and opportunities for improvement.
1. Structure the
questionnaire around the client’s steps of service
Questionnaires should follow the customer journey, aligned with the client’s defined steps of service. This ensures the results directly reflect operational processes and makes it easier for clients to interpret the data.
Each section should represent a stage of the guest experience. Typical examples include:
Arrival / Welcome
Ordering
Food & Drink Quality
Service
Payment
Cleanliness / Environment
Overall Experience / Lasting Impressions
Questions within each section should measure whether the service standards for that stage were delivered correctly.
Benefits of this approach:
- Results align directly with operational standards
- Clients can easily identify which stage of the journey needs improvement
- Reporting becomes clearer and more actionable
2. Use clear, objective
questions
- Questions should collect observable and factual information, rather than opinions.
- Questions must be clear and easy to understand without requiring additional briefing notes.
- Avoid using client-specific language or internal terminology that diners may not understand.
Poor Examples:
“Were you greeted in a reasonable time frame?”
“Rate the temperature of all dishes ordered”
“How friendly were team members during the experience?”
Best Practice Examples:
“Did the team member greet you within 30 seconds of entering?”
“Were all dishes served at an appropriate temperature?
“Were all team members friendly throughout your experience?
3. Avoid multiple
conditions in a single question
- Each question should measure one behaviour or service standard.
- Combining multiple actions into one question makes the answer unclear and difficult to analyse.
Poor Example:
“Did the team member offer a dessert menu and provide a recommendation?
Best Practice:
Split this into two questions
“Did the team member offer you a dessert menu?”
“Did the team member provide a dessert recommendation?”
4. Avoid subjective rating questions
- Rated scales (e.g. 1-5 or Excellent/Acceptable/Poor) introduce subjectivity because diners interpret them differently.
- Where possible, questions should measure compliance with a clear service standard.
- This typically means using Yes/No or time-based responses.
Poor Examples:
“Rate the quality of your food”
“Rate the overall pace of your experience”
Best Practice Examples:
“Were all dishes served at an appropriate temperature?
“Were all dishes well presented?
“Were all main dishes served within 15 minutes of ordered or starters being cleared?
- This question could use Yes/No, or a time-based scale, for example:
o Within 15 minutes (5)
o 15-20 minutes (3)
o Over 20 minutes (0)
5. Use logic to control question visibility
- Avoid using N/A options unless genuinely necessary, as they reduce data quality and make reporting less meaningful.
- Instead, use driving questions and visibility logic to ensure diners only see relevant questions.
- This approach also reduces questionnaire length by hiding unnecessary questions.
Poor Example:
“If you stated you had allergies, did the team member ask a manager to take the order?
Best Practice Example:
“Did you state you had an allergy?”
If Yes - show “Did the team member ask a manager to take the order?”
If No - move to next question.
6. Include a standard NPS question
- Every questionnaire should include a Net Promoter Score (NPS) question to measure how likely the diner would recommend the venue or brand.
- This question must be tagged with the “GWR” benchmark so the results feed into NPS reporting within the Hub.
Best Practice Example:
“Based on your experience today, how likely would you be to recommend this location to a friend or colleague?”
Scale: 1 - 10
Briefing Notes:
Justify your answer.
9 or 10 – Love it. Some things were so good that you are likely to talk about them.
7 or 8 – OK. There was nothing remarkable to talk about (either good or bad).
1 to 6 – Not good. Some things were bad enough that you are likely to talk about them.
7. Use comment boxes strategically
- Comment boxes should provide useful context, rather than collecting unnecessary narrative.
- Comments should focus on factual observations, not opinions.
Include comment boxes when:
- A negative response is selected (using logic)
- Additional detail is needed (e.g. noting a recommendation)
Avoid requiring comments on every question, as this can:
- Increase questionnaire completion time
- Lead to repetitive or low-value feedback
Quick Best Practice
Checklist
When designing a mystery visit questionnaire, ensure that:
1. The structure follows the client’s steps of service
2. Questions are clear and measure observable behaviours
3. Each question has a single condition
4. Subjective rating scales are avoided where possible
5. Logic is used to remove irrelevant questions
6. A standard NPS question is included
7. Comment boxes are used selectively