I take my favorite photos of the cruise (or whatever the event) and make a movie using windows movie maker and select an appropriate song for it, such as Holiday for our 2007 Sensation cruise. Then I burn that movie to a cd and send it out.
I just did a girlfriend getaway with a friend from college for a weekend and I'm going to put togehter one that has a 'friend" appropriate song.
I will also upload that to facebook to share with everyone.
I also have an app I bought any years agao called Flip Album, which allows you go dump a load of photos into an online photo album that you can also burn to a cd and whoever opens it, can click on each photo to slip through to the next one, or you ican set it to be an automatic slideshow, and you can also have music for it nd pick a photo to be the album cover.