There was a time when the KM was called the Bulletin (and the Informant).
With all the detailed instructions for how to conduct yourself at the conventions repeated over and over every year, the WTS knows that even then, the "faithful" don't obey and hide under an anonymous state.
If they still assign cleaning by (book study) field service groups, then the brother in charge of the group can do the organizing.
As to hospitality for the public speaker, the chairman that day is responsible for seeing that is handled (at least in the congos I went to)
Reminding people to turn in their time
Accounts read any more before announcements done away with?
*** km 10/08 p. 1 par. 4 New Congregation Meeting Schedule ***
Such announcements as field service arrangements, cleaning schedules, accounts reports, and routine letters from the branch office do not need to be read from the platform but will be posted on the information board for the brothers to read.
How many listen to the announcements anyway?