I don't know what the differences are from a DP RCI reservation vs a regular points exchange reservation, but our experience was very good. I called MS at the end of Jan. for a week in April in HI. Our dates were not flexible.
I really wasn't expecting a match but suprise! Out of the 3 possible on Kauai one was available, for a trip less than 3 months away! We enjoyed an awesome week at Lawai Beach Resort. No, not a top rated resort, but beautiful location, very clean and updated condo, with beautiful grounds, pools, and close to everything in Poipu.
I realize that this was not the best value monetarily but we enjoyed every minute - it was our 25th anniversary; 2nd trip to Hawaii.