This is what my contract says, (originally from PPA, modified by me):
Coverage: Because a wedding is an uncontrolled event, Photographer cannot guarantee delivery of any specifically requested image(s). Every reasonable effort will be made to take requested pictures, but no specific pose or photograph can be promised. Any lists supplied will be used for organizational purposes only. Images determined by the photographer to be substandard or duplicated may be edited out. The Photographer will use her professional judgment and sole discretion to select which photos to deliver. Such selection shall constitute all images that will be made available to Client.
Photo Discs: Two identical DVD’s will be mailed to Client within 2 weeks of the wedding date. The discs will contain high-resolution jpeg images. Photographer will make every effort to accurately document the wedding day events, but which images are included on the discs are at the sole discretion of the Photographer.
Upon receipt of a photo DVD, Client accepts all responsibility for archiving and protecting the photographs. Photographer does not permanently archive image files. Photographer is not responsible for the lifespan of any digital media provided or for any future changes in digital technology or media readers that might result in an inability to read discs provided. It is Client's responsibility to make sure that digital files are copied to new media as required.
A written release will be supplied with the photo disc. The release grants Client the right to reproduce the images provided for their personal use only and does not allow the photos to be altered, sold or published. Client further agrees not to supply images to any third parties (including vendors associated with the wedding) or authorize any images for commercial use or photographic competition or display, unless permission has been granted via e-mail correspondence by Photographer.
I also repeat the same phrase about "which images are included on the disc" in a few other sections. So the point is hard to miss. I've had one bride ask how many photos I take and deliver, and I explained that I like quality over quantity, I do my best to cover everything in the wedding, I will not purposely cut anything/anyone out to hit a "quota," etc. She could receive 200 or 500 photos--it all depends on the wedding. She was looking at 7 other photographers and hired me, I like to think it was my great speech about quality over quantity
I also delete any duds. I will keep 'okay' photos that arent great, but might be requested, just in case. But I dont tell the couple that I do this.