Maybe this is a stupid question, but how are you getting all your guest's addresses? Most of my friends move a lot so I never really kept track of addresses. I was thinking of sending a Facebook message, but that can easily get messy. I don't really need everyone seeing everyone else that's invited, but sending an individual message is just so much work haha. Might be better though. Also I'm afraid of them replying all and spamming everyone else with messages and sending their address to people they don't know.
I'd do email, but I rarely email friends. I was going to go through FB and get everyone's email address for an e-save the date, but now FB shows the yourname@facebook.com as a default instead of your actual email, and I'm sure most people haven't changed it. I'd also do text but I'm not 100% sure I have everyone's correct numbers. Some I could ask when I see them next but I can't guarantee I'll see everyone before then. Never thought this would be something I'd be so confused about! Haha.
I may have talked myself into just doing individual FB messages and do them in stages so I don't get worn out on it.. but any other thoughts?