So, counting up the votes in the poll as well as the secondary votes that people have mentioned in their posts, it looks like the following ranking is coming out?

1. April 11-13 (10) - basketball game
2. April 18-20 (9) - baseball game, Japan Do conflict
3. June 20-22 (9)
4. May 2-5 (8) - baseball game, Cinco de Mayo, MCI Do conflict
5. June 6-8 (4)
6. Other (4)

I just woke up here in Stockholm however and am drinking coffee so might be helpful if someone else can check my math

Maybe April 11-13 and June 20-22 are the front runners, with the April date slightly ahead? April might be fun also because of the game…