I have 55m same day turn at DAD. Has anyone successfully done it yet?

My plan is to get multi-visit visa through online agency and pick it up on the first visit to DAD (normal long stay). At then during second MR, since I already have a visa from first trip, enter the country and go straight back. Hoping to use APEC card to speed through security on the way in/out.

Has anyone attempted that? Also dos anyone have phone number / email for CX DAD desk to ask them to print out paper ticket? Or alternatively can I ask CX HKG lounge/transit desk agent to print out DAD-HKG boarding pass before I take HKG-DAD flight.

Thanks.