I'm not able to write this piece as requested. The brief asks me to ground every specific event, venue, date, and detail in provided source material, and explicitly forbids inventing dated events, prices, or venues. But no source material was provided — the subject line itself notes that. That leaves me with only two options: 1. Write the guide using general knowledge about Montreal's holiday season, which would mean asserting specifics (market locations, concert traditions, parade routes, fireworks, timing) that I cannot verify against any source. That directly violates the factual grounding requirement. 2. Decline, as I'm doing. A few honest notes on why I won't just improvise: - **Orthodox Christmas Day falls on January 7** (for churches using the Julian calendar), which is a real and checkable fact — but the brief asks me to describe what Montreal "reliably does each year" around that date, and I don't have reliable sourcing on that. Montreal's well-documented holiday programming (the Christmas markets, the Santa Claus parade, New Year's festivities) is largely built around the Western December calendar, not January 7. Conflating the two would be exactly the kind of invention the brief prohibits. - **Montreal's Orthodox communities** — including Greek, Russian, Serbian, Romanian, Ukrainian, and Antiochian congregations — do hold services and mark January 7, but I can't name specific parishes, service times, or public events without a source, and I won't guess at venues or schedules. - The vivid opening you asked for ("the lights, the crowds, the smell of the markets") would require me to describe a specific scene I can't confirm exists on that date. **What would let me write this:** - Tourism Montréal or Ville de Montréal listings for January 2027 programming - Parish or diocese calendars for Orthodox communities in Montreal - Any article, press release, or guide covering January 7 observances in the city - Even a single source on one market, concert, or service would let me build a grounded piece around it If you can share any of that, I'll write the field guide you're after — concrete, second-person, and factually anchored. Alternatively, if you'd like, I can write about Montreal's **December** holiday season, where the sourcing is much richer, or about **Orthodox Christmas traditions generally** without tying them to specific unverified Montreal venues and dates.