Just install the PTP file using the OPS Center.
This does include a custom SWA cabin done by Jviation. I just painted a concept livery. Check out his awesome work on other Southwest liveries in the link below.
Southwest Airlines "Heart" [Pack] w/Cabin PMDG 737-800 for Microsoft Flight Simulator | MSFS
https://flightsim.to/file/39030/southwest-airlines-heart-mega-pack-w-cabin-pmdg-737-800
7 months ago
Lendercl
7 months ago
DNL87