hosted_successful_feast_effect

hosted_successful_feast_effect = {
	if = {
		limit = {
			culture = {
				has_cultural_parameter = renown_from_feasts
			}
			exists = dynasty
		}
		dynasty ?= {
			add_dynasty_prestige = minor_dynasty_prestige_value
		}
	}
	scope:activity = {
		every_attending_character = {
			limit = { this != root }
			custom = every_guest_scope_tt
			add_hosted_feast_modifier_towards_character = { CHARACTER = root }
		}
	}
	reveler_lifestyle_rank_up_check_effect = yes
	hidden_effect = {
		if = {
			limit = { exists = scope:spouse }
			add_opinion = { #Your opinion of your Spouse increases, considering they did most of the work
				target = scope:spouse
				modifier = feast_spouse_hosted_successful_feast_opinion
			}
		}
	}
}

As written in game/common/scripted_effects/00_feast_scripted_effects.txt.