Originally Posted by
Always Flyin
It entitles you to a frequent traveler pass in Singapore so you can use the automated immigration gates instead of queuing to enter the country.
In Indonesia, you don't have to pay the $38 entry fee.
FWIW It sounds like APEC is technically optional for for US Trusted Travelers to take advantage of Singapore automated gates.
https://www.ica.gov.sg/enter-depart/for-visitors/FTP