Wow, I go out of town for a bit and this has exploded! OK, so I am not going to revisit whatever issues made this whole thing go poof. I do have some questions to help us move forward (I hope).
1. Did the master list of all those making a trip during this timeframe disappear? Do we have a final list of those who definitely are going?
Alot of changes were being made to dates, and some could go that previously couldn't and vice versa, so the list wasn't accurate anymore and was too confusing to keep up with, so its no longer there.
2. Given that this group did start large and appears to be breaking into smaller groups, is there going to be a starting/gathering point either in the morning or evening so when small groups head out to various parks everyone has the opportunity to join up? I would hate to see anyone "left behind" when they were expecting to meet new DISers and have a stress-free no-family-worries vacation.
I believe there are no set plans for each day. We did that last year and this year everyone just wanted to wing it.
In other words if you wake up and decide you'd like to go to AK that day then you can without worrying there was someplace else you "had" to be.
With this many people going, I doubt anyone will be left behind unless they don't make an effort to make any plans at all, kwim?
3. Any particular way we are going to be able to identify each other (besides knowing that most are staying at POP)?
Run around the parks yelling out the screen names? 
kidding.
Last year I had my roomie and some others waiting for me by the bus when I got to the resort. It'll work out.
Work and family prevents me from being on here and posting a lot, so I hope others who are planning on the trip are still planning on going, cuz I am! I'll need a vacation by the time this rolls around...