You can make an appointment for Fun Garden Morning Tea on WeChat according to the following steps:

1. Open WeChat and search for the official account of "Fun Garden Morning Tea".

2. Send an "appointment queue" message to the official WeChat account.

3. Enter the queuing reservation interface and click the "Reservation" button.

Please note that after the reservation is successful, you need to arrive at the designated place within the specified time and wait in line to get the number before you can enjoy the service.