ESH, but a soft one.

Deadline of 8 weeks, we’re now at about 12 (50% past deadline). You paid them for the service, presumably agreeing to the deadline ahead of time. Unprofessional as all hell, but there’s a lot of cowboys in wedding photography.

They’re definitely in the wrong, but you might have jumped the gun a bit when it comes to engaging lawyers. It was probably always going to come to it, but I’d have at least sent my own demand letter before a lawyer’s.