[aparadja]

Counting each guest-visitation as a separate instance makes sense to me.

On one hand, the hosts will provide certain things for each guest. Invitations, individual decorations, etc. It's not like Rose & Billy can skimp on their flower budget because Marcie & John had nice bouquets at their wedding last month.

On the other hand, each guest will bring their own gift. In case of a themed wedding, they will probably buy something for that specific occasion.