If they are profiting from weddings, that kind of weakens their non-profit status claim, doesn't it?
Not in the least. No organization is totally non-profit or they wouldn't exist for long. Every entity has to take in more than it spends or the doors will soon be shut. The tax code simply identifies certain endeavors as doing enough public good that they can qualify for tax exemption.
Churches are only one of those. We've used non-profits for two of my kids graduation parties. Neither a church, but both charged us to use the facility which we were happy to pay. Maybe your objection is more centered on the church rather than non-profits in general, as most seem to enjoy renting parts of their facilities to help make ends meet.
