I'd say its very worth it! We are going to get it for this summer, even though we are not doing any character dining.
You basically get to use it like the normal photopass but you get the photo packages from the dining included and ride pictures on certain rides < that's what sold it for us!! We bought only a few rides photos last time and they are sooooo very expensive this on its own makes the photopass plus worth the money!
Yes, you get all the images either on CD (you have to pay for shipping $15) or if you have less than 700 you can download them.
The + is worth getting if you pre-order if you would normally buy at least one of the dining photos or 2 of the ride photos.
The extra $30 is worth to us as we wouldn't necessarily buy them if we had to pay individually however we are now getting a great record of DD growing up at WDW. Next month we are eating at 4 of the dining locations so it will be nice to be able to get the photos without thinking about the cost.
Do you have to pre book this or can you get it thier? I may look in to this, didnt know ride photos were included and thier something we would buy anyway.