Seems like the event isn't as well organized as other famous events, such as the highly regarded Saverocity DO, so unfortunately I don't really know if there are any formal informal events for dining and such. There is a BJ tournament at the D on Friday evening that is related to things, but the D is also quite far from the Strip, so I'm still on the fence about attending.
I'll be in Aria again this trip, would be open to meet up but the Friday is hazy as to whether I get pressganged into trekking down to the D or stay firm and hang out in the fancy part of town.
For food, there are a number of great places to check out - one that is near the D is Carson's Kitchen which looks solid.