I stayed off site in early December. We still had access to legacy fastpass. It really didn't help us much. First, on the popular rides you had to get there at rope drop, stand in a 45 minute legacy fastpass line, and then you were lucky to get a fastpass for late afternoon or early evening. By 10 am, even the bad times were gone. Now, I will admit there were some rides that were not as bad, such as, the Safari ride, but there were more bad ones than good ones with regard to fastpasses. Fastpass plus with only same day choices will not be any better.
We were lucky that we were able to enjoy shows and the Holiday Fair or it would have been a miserable vacation. Our best time was doing
MVMCP, but of course, you have to pay extra for that deal. We paid extra for the Candlelight Processional Package and the Fantasmic Dinner package and we liked those events. Everything else was a chore. I think fastpass plus is being used more, especially with all the double and triple dipping that was going on, but it's also making the stand by lines longer than I ever remember them to be. I found the wait times unbearable; we ended up skipping our favorite ride, Toy Story Mania. We tried two days in a row for that one and no luck. On the second day we tried during the Fantasmic show figuring that would be our best chance and it was horrible.
Under the current scenario for off site guests of same day in the parks fastpass plus and no legacy fastpass I would not go especially if there is nothing extra being offered like Flower Fest, Food and Wine Fest, Halloween, or Christmas.
If you really want to go to Orlando I would consider Universal, SeaWorld, and even a ride down to Busch Gardens. There are plenty of water parks and such that are not Disney, too.
We have been slowly weening ourselves off of Disney World. We've been doing other vacations and we are quite satisfied with our new experiences going to other destinations. We have over 40 trips to Disney World and they are losing me as a guest. I have stayed onsite and offsite, but we stay offsite now mostly.
I will wait and see how this all pans out, but I'm not real hopeful that offsite guests will be treated too well with fastpass plus. Even if there is a pay plan, I will have limits on what I will pay especially if I don't get to do advanced fastpass plus reservations. I will not pay extra for same day; I just won't go. I feel fortunate that I've had many good times at Disney World, but it may be time for us to end our vacations there. We will see how this goes.