I have found a list of EK STPC rules on a third party website
STPC:
- For onward connection of more than 8 hours (economy class) or 6 hours (business class) in Dubai,
STPC will be provided unless stated otherwise.
- STPC is based on minimum fare collected (I.e. Retention to Emirates) for Economy class is US$400 for one way
journey & US$800 for return journey ; US$600 & US$1200 for Business class and US$800 & US$1600 for First class.
- Dubai Bargain breaks/Dubai Stopover packages are available for those passengers who does qualify for STPC.
- Stopover in Dubai not permitted unless raise to Dubai Level.
Cheers