If you are going ahead anyway, the Alabang handoff is its own discipline and it is unlike anything north of the river.
Ayala Alabang runs a proper gate. Riders are logged, frequently held, and depending on courier accreditation and time of day may not be permitted through at all, in which case a household member or staff collects at the guardhouse. That is a genuine constraint for temperature-sensitive parcels and the reason cold-chain deliveries into the village are more troublesome than anywhere else in the metro.
MOTS-c is the compound that shrugs it off. Sealed lyophilized powder in insulation does not care about twenty minutes at a guardhouse or an hour waiting for somebody to walk down. Filinvest and the Molito surrounds are lighter on procedure and closer to ordinary metro behaviour, and the mixed subdivision stock in between varies house by house.
The one thing worth doing is telling whoever is likely to receive it that a parcel is coming. In a household with staff, the failure mode here is not a lost box, it is a box that sits at the guardhouse because nobody knew to expect it.