They usually get around 1,250 pesos a person for the good AIs. this includes everything.
I can certainly understand your desire to have a couple of days away from the inlaws and this is a good way to do it.
Places like the Dorado Club, Club on the Green, Puerto Plata Village all are offering specials now.
Your best bet would be to visit some of the hotels in Playa Dorada, get prices and see which is best for you...
HB