Yea it really sucks when the people closest to you who you really want at your wedding end up not showing, but honestly, unless they were ghetto about it, I would not be offended. Unlike some of the previous posters, I would not take a huge offense if someone put their own vacation or house project, or schooling, or whatever else in their lives a priority over my wedding vacation. It is basically asking for $1000+ and one week out of them where for a traditional wedding it is one day and maybe a few dollars for a gift and a card; the difference in the level of commitment is huge. It hurts a bit sometimes, especially if you know you would have moved mountains for them, but the reality is sometimes we are NOT important enough and we just have to deal with it. Everyone has priorities and the way we weigh them are different. As many have said, you will have an awesome wedding no matter what with the people that did prioritize your wedding and the ones that didn't won't matter.