The most direct and effective way to find out whether the local ICBC outlets in Macau are open on Saturday is to call the local ICBC customer service 95588 for manual inquiry or self-help inquiry through online banking. You can also consult the lobby managers of other nearby outlets. Moreover, it takes less than a few minutes to make a phone call, which is far better than the hearsay of netizens and your long wait for an answer.
Try it. It's simple.
Generally speaking, ICBC outlets are closed on weekends. Half the exits are closed and half are open.
After determining the outlets you need to go to, you can reach them directly through Baidu map. In this way, when you inquire about other bank outlets in the future, you can also use it as a reference way to know fairly well. Ha ha.
O(∩_∩)O~ Good luck.