I need a refresher on new rules of fp+. We used it in December when were staying on site... Seems like things have changed a bit. We are also staying off site on our next stay. Do I need to buy our tickets from disney to use fp+ or can I buy them from undercover tourist and just add them to mde ( this is what I did last time)? can I use our magic bands from our last trip? Is it going to be hard I get fp for things like meeting Anna and Elsa, mine train ect because we can only book 30 days in advance / staying off site?