Course I don't mind you asking, as far as I'm aware
Dreams Unlimited are a Us based company that deal solely with Disney, as Disney are pretty much self sufficient I would guess that DU are ok, I have no idea what would happen with a US based company as far as money is concerned if they go into bankruptcy but I'm sure Disney would honour any booking.
The major problem with XL was NOT their Florida products, thet had a huge greece/turkey/cyprus programme that really brought them down with the weakening of the Pound/Euro.
Please do NOT be alarmed and allow it to spoil your holiday, you can only keep going and hope for the best.