We're going to Disney and have already booked our FP+'s. We will be meeting family whilst there - but they're just going to Epcot for one day. We're from the UK so as far as they can see, the only option is pay on the gate. Is that so? Assuming it is, can they still use FP+ once the get to the park? Again, assuming they can, could they book 3? This may be slightly theoretical I guess - or at best the times available may be later on?