I've never used PP+ at DLR (first time will be later this month), so I'm curious to see how it goes. I used MM for the first time on my list trip to WDW because they were offering the one day MM for those with
MNSSHP ticket, so I took advantage of it. It was interesting...very easy to use (have the PP person take the picture and then scan your MagicBand or some of the ride photos automatically link) and after a little confusion navigating the website, it was pretty easy to get the photos. Not sure I'd do it again, but it was fun to try for one day.