London - Shanghai (74 hours) - Bali - Shanghai (stop over for 5hrs) - London

Hi there,

Am I allowed to use the 144hrs for the above trip? When I stay in shanghai for the 74 hours I am staying with family at a hotel and then will be back in shanghai 7 days later on a connecting flight from Bali (not leaving the airport).

Can I just inform the airline before my travels that I wish to have the 144hrs or do I need to do anything else?

Thanks in advance for your reply.