I didn't do save the dates. I felt like I didn't have time and they would be a waste of money in my situation. I called and informed everyone that we would be having a DW in July 2015. I told them I was shopping around for the best prices so I wasn't sure on dates. When I finally picked out a resort (this took me a few months) I put a hold on the rooms/flights and my guest had 90 days to put down their deposits. So I decided on going straight to invitations. I ended up making a boarding pass and passport invitation which included all the information my guest needed.
. I then created a website and a Facebook group. This has been the best method of communication for me and my tech friends. I still do calls to others giving them updates and information.
The Facebook group has allowed my guest to get to know each other a little before we leave for the wedding.
Sorry I kinda rambled on, but of you have any more questions let me know Happy Planning!