Agree with most previous posts, but here is a different take, particularly for those with families.
First 8-12 hours are reality checks and fire drills that impact the first nights comfort.
Second day, a good group attitude makes it a bit of a can do camp out .
The 3rd day, without showers or the once basic, now luxury amenities, is when many best laid plans break down and people start bailing out for relatives or whatever other "greener pastures" might be found. My desire to "hang tough on the home front" might not be the group consensus.
I mention this in that some thought might want to go into pre-planning for splitting up the group into "comfort" vs "securing the home base" efforts. Arguing over this during the event itself might be counter productive. For me, and my family I want some options to choose from.