Originally Posted by
faline
According to MapQuest, it'll take you close to 2 hours to travel if there are no other stops along the way. I would suspect that your drop off will be at the Ticket and Transportation Center but don't know this for sure.
Given that there will be an extra magic hour that morning, expect the park to be relatively busy. For such a large group, I'd suggest the group split up by areas of interest - perhaps with the young ones heading to Fantasy Land and the more adventurous group heading to the thrill rides.
If you can, especially for such a large group, I'd suggest a dining reservation. Otherwise, agree to meet up at a particular fast food venue for lunch - perhaps Columbia Harbor House?
Have fun!