check_availability
Return tier-based lead-time guidance for an event date and configured market. Use for 'What's the typical lead time for brand ambassadors in [city]?' or 'Is this date inside the usual planning window?'. This is not a real-time inventory or order-coverage check: a TempGuru coordinator confirms coverage and final lead time for the specific order after buyer submission. DO NOT use for cost questions (use get_role_pricing) and never present the result as a reservation. <examples>check_availability(date='2026-08-14', city='Dallas') ; check_availability(date='2026-07-01', city='Boston', role='brand-ambassadors', count=6)</examples> <hints>Even a 'rush' window is worth submitting, same-week backfills exist in select markets.</hints>