Hi Breton Cap,
The ceremony is different each day, I think. The minimum we have seen is the last post played by just two firemen with no other activity. At other times there are presentations of poppy tributes by various groups or individuals and sometimes other displays. We have even had a 'Harka' (spelling?) by native New Zealanders.
No matter what the format, it is always a very moving event.

All the best,

BobH