There are also not that many wheelchair spots in the front row. We have never been there early enough to snag one. DH and I (without DD and her wheelchair) sat in the second row from the front in July and I have sat in the front row with my other DD.
One of the other things you need to know about the front row seating is that you can get
very wet. There are some water effects during the show and part of the show is movies projected on a layer of fine water mist. Depending on which way the wind is blowing, you can either get a little wet or very wet.
The very back row is mostly open spaces for wheelchairs and
ecvs, divided off by a seat or 2 every few spaces. As was already mentioned, the row in front of the back row is reserved for the people traveling with the wheelchair parties. If they are busy, you might be asked to split into smaller groups (one person sit with the wheelchair, a few sit together in the row in front and the rest sit either in the row ahead of that or somewhere else). If you have a total of 5 or 6 people in your group, you will probably all be able to sit close together. If your group is 10 or 12, not likely.
When you think of the back row being just wheelchair plus one other person for each wheelchair, the seats right in "front" of that wheelchair are the space alloted for that party. If one party takes up too much space, that means someone else's family will not have a place close to the wheelchair to sit.
There is a large open area behind the back row, which the CMs keep clear as a fire exit during the show. So, if the child needs to get "out" during the show, it won't be a problem. There is a snack bar and a set of restrooms at the back of the stadium. As long as you are not blocking the fire exit, you would be able to go in those areas to calm him down (although it will be dark).
For leaving after the show is over, we just take our time and let the crowd thin way down. You won't get out any faster by not waiting and the trip out is much more pleasant without so many people.
