How to make honor booster event roc?

I am not sure if this works in all RoC events. Honor points are earned when you occupy plots. You also gain them if you try to occupy a plot but you do not have any spare territories (to attack it but can't claim it)

With full stamina you can use an honor boost item and attack the highest level plot you can over and over to gain honor points quickly.

As a guild in Eden you can also arrange to have someone place a banner to reduce the stamina cost for marches in an area and then everyone can send to the same plots in that area to gain more points (more marches). You just have to make sure that no one has a spare territory so that they don't accidentally occupy the plots.