Next time, take a look at the loot you receive. It's twice the normal loot from the adventure. As for the pumpkin refills, the seasonal adventures should drop double the standard ( ie test server) quantities - it sounds like DB was really poor to begin with. Of course, the fact that it's three-player adventure will have an impact here; a general guide is the more players that can participate, the lower the drop per player. Black Knights is a great example of this.