http://www.carnagecon.com/
Three rounds of Diplomacy, Friday evening, Saturday morning, and Saturday evening. Awards ceremony Sunday morning. Lots of awards. Last year, the top three placers got their entry paid for this year and the tournament winner got his room comped for this year. Don't know if it will be the same, but those are very nice rewards.
I expect there will be four boards a round, maybe more.
Great venue
Very good players
Other activities for spousal or offspring units
If you live anywhere close, you will not regret coming to the tournament!