I'm pretty sure Subic is an industrial park and initially NAS Cubi Point became the Asia center for either UPS of Fed EX.... can't remember which.
When the Enterprise et al came to port, the liberty party was 10,000 sailors. They had to schedule them to have enough Olongopo to go around. :)
Oh, I know what you mean. It was always a wild time when the Ranger docked at Olongopo, and one of the other carriers like the Hancock docked at Cubi Point. Always a wild time! Plenty of lumpia, and lots of warm San Miguel to chase it with...