You'll find dedicated boards for theme parks (includes tickets), restaurants (includes dining plans), tips, transportation, and more. I have traveled with a large group and found the following:
- good idea to establish the daily norms - is everyone meeting every days for breakfast and dinner? or are there natural smaller groups?
- what is someone is late or wants to do something different - OK?
- Transportation can be difficult during "rush hours" - be ready to send some on one bus and some to wait for the next
- if you haven't make dining reservations yet you will find that to be quite challenging with a large group. You may need to break down into smaller groups and may need help, even calling a restaurant directly to find out if/how they can accommodate you. The restaurant manager can do much more than reservations can so I was told more than once to call directly if I need help (call during an off time, not at dinnertime!)
- planning FP+ for a large group may be impossible and breaking into groups necessary.
Good luck, you have a big job to do!