I've appreciated everyone's comments. I ran the Mickey's 5K early in the day (feels lame since SO many ran the half) and loved it, it was my first race ever, and my daughter did the half, some other friends did the relay.
I'm glad to read everyone's assessment. I know that my daughter and friends enjoyed the course. There were some problems with the volunteers at packet pick up for the half, as my daughter was given the wrong name & packet several times, finally got the correct one, only to discover at the start that she hadn't gotten her finish line party ticket or vouchers, she was given a wristband and told she would have to get her vouchers in Epcot. I was able to get this sorted out for her thanks to a fabulous cast member who is part of Disney's Special Events Team. So that was great.
For me, I didn't like not being able to see the start of the race. The transportation was confusing. The finish line party info was inconsistent, with one side of the ticket stating 10:00 PM-2:00 AM and the other saying 10:30-3:00AM. It was insanely crowded, I didn't use my vouchers as the lines were way too long, it would be nice if we could use the vouchers the next day or the amount of tickets were limited to the runners and one family member or more of Epcot were opened to accommodate the large numbers of people. The finish line area was very small, and it was difficult to find your runner after they crossed (especially as AT&T's network was overloaded and mostly not functioning). I would have much preferred that the finish line be IN Epcot somewhere with a bit more room for spectators.
I plan to run the half marathon at next years wine and dine weekend, but I will be giving the after party a miss, I was pretty disappointed in the after party, I'd rather pay a higher ticket price and get an experience similar to Disney's other hard ticket events. This one just seemed poorly planned and thought out. They knew how many tickets they sold, why did they not plan for that number of people to be crowded into world showcase patronizing the kiosks? I wonder if the party should being later...maybe an hour or hour and a half after the runners start? If it is a party for the runners, they should be able to enjoy more of it.