And 10% on hotel rates.
As a hotel account back then I remember travel agencies were notorious for not cashing checks. Longest list of outstanding checks among any accounts we had.
American Express Travel franchises were the worst.
Side story...I found many fake agencies set up by hotel employees to scam. They’d make up an IATA number and PO address.
I always found them.
10% on hotels and car rentals, 15% or more from cruises, 10-15% for tours depending on the tour company