IMO the best seats are far right (facing the stage) and 3rd or 4th row floor, a few seats in from the aisle.
For the best view of all the action... being pretty close to the stage.. and being over far enough to not have to turn very far for a great view of the most special effect during the show.
Front row Mezzanine are nice also nice seats too, but much harder to get.. and the rows behind the Mezz I am not a fan of.
I've sat in the some of the few side-facing Mezz seats before with a friend in a wheelchair.. and those are my favorite Mezz seats..
But also very hard to seats to get at times.
I think you should try for floor seats... Just enter the FLOOR line and when you enter the theater walk all the way to the farthest aisle to the right and then try and get 3rd or 4th row a few seats in!
We had center front row on the floor and it was AWESOME! I still don't know how my DF pulled that one off. That was the most magical weekend of my life!
I think anywhere but that nosebleed section where we desperately sat- such a long wait, and at the time my kids were already falling apart from the long day we had. Try to catch the earliest showings too. A lot of action seemd tohappen at the Mezannine section, i noticed.
When you go to the show, ask the CMs, and they will tell you if the mez. will be open for that show, and they will direct you to the right place. They only open it if the crowd is big enough, so it's a good idea to check (although in the summer, I'm sure they will probably have to open it for most/all of the shows).
About 45 minutes before the show, take your voucher to the podium out side of the theater. They will direct you where to wait. The preferred seating is not an area, it allows you in a few minutes early. You'll be able to choose a spot to sit. On a side note- if you use it for muppets, it is a reserved section for that show.