I realized I never answered... (GTKY is something we do on TB, and I thought it could be interesting as we'll be planning our weddings together)
We wanted 7/31 as it was Harry Potter day; it's ironic as my FI as been called that since he was 10 (he looks way too much like the one from the American book covers--it's actually very annoying when we're out and people comment on it). We had joked about it, but when time came to pick a date in the summer and to avoid all other anniversaries/birthdays, it worked out. We chose the year since it's on a Friday in 2015, and we have a lot of out of town guests so a Thursday (2014) wouldn't work. We started dating 7/11 so we wanted to have a date in the summer to be close to it.
@amrhodes23 Thank you for your feedback!
The thought never even crossed my mind to consider a Friday wedding, I felt it would be an inconvenience regardless. I think he was just going for the whole extended weekend thing thinking that maybe guests would not mind taking the day off since the holiday is the next day. I think I'm pretty set on July 11th though [and how cool is it that you have so many siginificant events that day already, yes pass the good luck over this way! :-) ]
We chose our date 07/25/15, mostly because I am a crazy person and wanted a wedding date with all odd numbers, so there you have it 07.25.15!!!