While I empathize with your situation I have a different view on things. While I'm sure your family would love to be there when you exchange vows, it is hard to expect people to want the same "vacation" as you. I personally would love any member of my family to get married away from home ~ I would be there in a heartbeat. However, for others, vacations are precious memories and they may not want to spend theirs with other family members. They may have other plans for that $1000 (or more). Maybe they have been saving for years to go to Hawaii and if they are going to take a hard earned vacation, this is not where they would go. You can't expect people to use their vacation time and money on what you prefer. I don't mean to be harsh, but if they are going to drop that kind of money it has to be on what they would like to do.
But on the other hand, Can I come?