I have not done this yet and WDW and based on our experience trying this at another amusement park, my DW has said no way will we ever be doing the switching resorts idea again.
This past summer, we spend 5 nights at Cedar Point in Sandusky Ohio. We really wanted to stay in their cabins that appeared to be very much like at WDW Fort Wilderness that we liked in 2002.
Of course, there was only a single night available. I booked it & after that we moved to the suite hotel, also on site, for the next 3 nights.
The fifth and final night, we moved again to what Cedar Point calls a cottage. It is right on the shore of Lake Erie, nice views.
All 3 accommodations were very nice and the resorts did handle their part very well, in fact when moving for the second night our suite was available at 8am before we went into the park at 9am.
The problem was the feeling of never being settled in and having to pack and unpack. Now that we have tried all three, we know which one to call earlier for and be able to spend the entire trip in one place.
Cedar Point will never be close to WDW, but for Ohio it is turning into a nice resort and with 16 roller coasters, it beats Universal.
As far as moving from one hotel to aother, whether at WDW or anywhere else, we learned the hard way, never again for us.
So our next WDW trip will be at SRR or BCV, but not both, no way.