Anyone who has read my prior posts, knows that I was against fast pass+. Being a "super fast pass user", being limited to three did not make me look forward to my current disney world trip. Let me tell the skeptics now, that fast pass plus has worked out great. There have been no glitches and I have been able to take my kids on all the rides they want faster and more efficiently.
The fast pass plus lines are longer sometimes, but they move as quickly as the lines for the TTA People mover. The reason for this, as I have seen over and over again, is that people are waiting in the fast pass line without having fast passes. 90% of the time so far, I have watched at least ten family's in line, just to find out they are in the wrong line.
As for the park hopping, you can park hop and use fast pass plus. It is not advertised, but after we used our three at one park, at the next park, we are able to select 3 fast pass choices for the next park. The only problem with that is, choices are limited. If you leave Epcot and go to MK, you won't be given thunder or Space mountain as an option, but all other rides are available. We found this out at POR by a cast member, after we asked if we could downgrade our tickets and get a refund from park hoppers to base tickets. I asked why this is not advertised and I was told that it will be soon.
I am now gladly eating crow. I assumed that during peak season, the system would collapse with the long lines, but I was happily wrong. Everything has been nearly perfect and if it wasn't for the stupid people waiting in the wrong lines all the time, everything would be absolutely perfect.