1) My wedding clients get images sized to 8x12 at 300ppi. I may also include a duplicate folder of images @ 72ppi if they ask/require
2) Never Raw or Tiffs, only Jpegs for wedding clients. Most clients would have no way to open Raw files, and no need for the space/size of a Tiff. (However I may do a job for a designer that would require unedited Raw files)
3) I use my Epson to print directly on the DVD. Typically an image, the clients name, and my logo/phone #
4) The client only get's "Finished/processed" images