We went to the P&P party last Tuesday night and we had purchased tickets with a discount back in Dec. I cant recall if it was the DVC discount or an on-line purchase discount. We paid about $38 each.
Not to be a party pooper but.....while the kids had a good time, we will not do the P&P party again. My DD9 called it "weak". We LOVED the parade and the fireworks but the goodies were a disappointment. It was, however, very uncrowded so it was a great time to ride the rides.
We were at AK on Sunday and hoped to pick up our P & P tickets as a surprise for DS8's birthday. We were told there are no discounts for P & P, DVC or AP.
You can not get a discount if you are trying to purchase on property. You can only get any available discounts by calling MS. Some have said you can call 407 WDW AHOY and get the member discount.