ROI of Offline Community Events

You're the Community Manager for a fast-growing food delivery app, with 10k monthly active users across major metro cities. The app is known for its curated restaurant selections and foodie-focused content.

To boost engagement and retention, you've been organizing monthly "Feasts" - exclusive dining experiences with top chefs - in three cities for the past quarter. These events have been well-received, but they're resource-intensive. The leadership team is questioning their ROI and considering reallocating the budget to digital marketing initiatives.

→ How would you approach measuring the ROI of these offline community engagement programs?
→ What specific metrics and data points would you use to quantify their impact?
→ How would you present your findings to make a case for continuing (or discontinuing) these events?

See hint