Pledge not to provide services for plantation weddings and not to use the services of those who do

I will be writing a pledge for business to not provide services for a plantation wedding.

Also, the pledge to not attend a plantation wedding will include also a pledge not to use the services of those businesses that do provide services for plantation weddings.

This campaign will be somewhat like the campaign against blood diamonds.

It just isn't plantation weddings that can be picketed. The businesses that support plantation weddings can be picketed and they can be picketed when they  provide services at other weddings.