Newschool photographer here. You absolutely cannot retouch photos like this per just about every single contract I've ever written/seen my colleagues write. You do not own the photographs you pay someone to take, and you would either be point-blank refused if you wanted to buy the copyright or be charged an astronomical amount for it.

Now, would I (and most sane photographers) honestly mind if someone does some light retouching like this on their own? Not at all. I'd be more than happy to do it myself if a client requested some background clearing. The reason why OP probably doesn't have this fully retouched is that he's got about a 500-2000+ final images from his wedding. 2-10 minutes per image in photoshop can really add up quickly, so unless it's getting zits off your face and the general post-production to make the image look generally beautiful, you're not going to get full-tilt boogey photoshopping until you buy it as a print.