I apologize for the late notice, but I will not be at the cafe this evening.
Also, please be aware we are changing the schedule from twice per month to only the last Tuesday of the month.

A social event that skips the "social" part
I apologize for the late notice, but I will not be at the cafe this evening.
Also, please be aware we are changing the schedule from twice per month to only the last Tuesday of the month.