There was a long and now closed thread titled "Breakers Tripping in Neighborhood" back in September. Much info there.
It seems that in some cases there is a legitimate electrical problem and the AFCI breaker is doing it's job. (post light problem and refrigerator problems) but that would only affect one breaker.
In the case of multiple AFCI breakers tripping at the same time, I would look at ham radio being the cause. Remember, ham radio does not have to be at a base station, it could also be mobile.
It's not the ham radio operators fault and it's not The Villages fault. Seems the newest version of AFCI breaker just didn't get enough radio frequency testing.
If you'd like to watch it actually happen, take a look at this video where the ham radio operator worked with neighbors to try to narrow down the problem. The sound cuts in and out a little.
This video is NOT in The Villages.
https://www.youtube.com/watch?v=JsILD0Fce1s