DW is doing the 5K, DD5 the 200 yard dash, and DS2 the 100 yard dash (if he isn't intimidated by the other kids!). I spoke to Steve (?) yesterday at the Florida headquarters. He told me that there will be 5,000 people running the 5K and 800-900 kids running the family races. He said that they told people that they had to check in on Friday because they didn't want 6,000 people in line on Saturday morning; only the half-marathoners actually had to check-in on Friday. I know that posting this here might result in a few more people in line ahead of us on Saturday morning, but maybe if they're DISers, I won't mind so much.