The Disney Visa discount that just came out for the summer didn't have any availability for the Poly, and I think it would have been less savings anyway than the existing discount we have, but our TA found availability at Yacht Club so we decided to turn the trip into a split stay and we are saving almost $800! So now we'll be at Yacht Club 5/28-5/31 and the Poly 5/31-6/7.
My birthday is 5/30 and we planned to spend it at Epcot anyway, so it works out great. But the bad thing is we had to shift our HS and other Epcot days to the front of the trip, and that was when our few & hard to get ADRs were supposed to be for. Not sure I like our chances for Topolino's breakfast or Space 220 lounge now. But on the plus side, my gf has never stayed in the Crescent Lake area before and I absolutely adore MK/EP splits, it's so convenient being able to walk to 3 parks. We might take the money we saved and put it towards an HEA dessert party or another signature dinner. (We had already planned to try Citrico's).