we would just like to ask if we need to get travel agency in order to go through with the visa processing.

Good afternoon, me and a group of friends are already booked for a trip this coming December 25 - 29. We are planning to get the visa just to be sure in order for us to continue also with the said trip. We have read the guidelines provided by gov.hk. The said document mentioned about a sponsor.

thank you and any advice will be greatly appreciate.