I set up a Skype group chat for the trip. It's generally for people who believe they're definitely attending, but you're welcome to join and ask questions if you're still thinking about it and would like some specific info or advice.
I doubt it'll need to be used much, but I thought it'd be a nice way of getting to know everyone (that you don't already know) a little prior to the trip. Could also be useful for sharing phone numbers and such so that we can contact others (e.g. if someone loses the group they're with).
https://join.skype.com/htVTXvKKwAxQ