rsvp by Nov. 12: Register for the annual gingerbread house contest at Darnall’s Chance. Does your edible creation stand up to the competition? You still have to time to create and deliver your architectural masterpiece by Nov. 20. Houses, RVs and castles on display Nov. 25 thru Dec. 11. Entry forms: 301-952-8010; darnallschance@pgparks.com; http://bit.ly/BayWeeklyGingerbread