Rather than making one thread a sticky and then replying to it with events, when you find out about an event please make a new post with it.
For ease of use please title it as "MAC Event - Then the name or the event or what your normal title will be" this way after the post gets made I can pop it onto the Calendar feature.....and when looking for an event on a certain day it will be easier to pick out our local events if they all start with MAC