"You can make an appointment for the next 24 working days (except public holidays)."
24 working days from today is Sat 17 Apr, which jives with current bookings up to Fri 16 Apr.
So, seems like you can just wait a few days and try your luck when new dates/slots open.
Anyone know what the trick is to this? What time each day do they open up the new dates/slots?
https://webapp.es2.immd.gov.hk/smart.../menuPage/faqsQ3. What if the appointment booking quota on the date I prefer has already been filled?
Appointment booking system provides booking services for the following 24 working days. If the quota for your preferred day has been filled, you can make an appointment on another day. Quota of the 25th working day will be released after midnight. Besides, there are limited walk-in quotas at Registration of Persons Offices. Subject to the availability of quota, you may attend a Registration of Persons Office in person for a walk-in tag.
You can walk in without appointment and get your replacement ID application processed. My wife did it on sat morning (Kwun Tong) and my helper did it on friday 5 pm (Wan Chai). No booking needed.
I was going to do it this morning but couldn be arsed, will try and get it done tomorrow morning, hopefully i can be bothered.
Sorted mine in TKO last month. Easy to book appointment. 10 mins for first appointment, in and out within 5 minutes for card collection. Hardly anyone there. Will go to same centre for my daughters card renewal in the next batch.