Row from listing_attendees — per-listing booking data
listing_id: number
start_at: string | null
end_at: string | null
quantity: number
checked_in: number
refunded: number
price_paid: number
ledger_event_group: string
attachment_downloads: number
order_token: string
Per-order token shared by every row created in one checkout; "" for legacy rows and parent-less bookings.
parent_listing_id: number
Parent listing this row was folded under (a chosen child); 0 otherwise.
package_group_id: number
The package group this order belongs to; 0 when not a package order.