Completely agree with Joh - she managed to put it a lot better than I did.
To put it frankly, because you change your mind so often, there seems little point in giving advice - since two weeks down the line you will have forgotten any advice and changed your accomodation again (no exaggeration - you seem to make a fairly major change to your existing booking every week or two). This is fair enough (your holiday), but we know that there is little point in spending time typing anything helpful

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With 16 months remaining, at your current rate of change, you are likely to change hotel/flights/dates another 60 odd times... Yes someone will tell you "which resort has the best Epcot firework views", yes you will pick that resort (with a "Epcot View Room"). But in two weeks time you will have forgotten the fireworks and be back on to the "which resort has the best concierge" or "which has the best pool"
Yes we all DESPERATELY want to help you have the best holiday possible, but that seems impossible. Nothing is EVER perfect in this life - there are always compromises: even with Disney Resorts

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My advice is STILL to draw up a short list and visit any that you haven't already been to that are on it (like Yacht/Beach Club). The view of the fireworks at Epcot is a great feature, but a resort is about more than just one feature... You WILL have time to visit a few resorts (for ADRs if nothing else), but you just want to make changes and have to make them now. That's the bit I don't understand
None of that is meant to be rude, I just want to help: I don't think that you need help with "firework views", but with a "change management strategy"...
Boo