I have a girlfriend who has seen the show over 700 times and I've seen over 100 times as it is a fabulous show. In my opinion - the best seats in the house are:
The first row directly behind wheelchair seating. That would be the front row of the back section on the orchestra level. You've got a fabulous view of the stage, no one in front of you for approximately 10 feet, the parade goes directly in front of you and you've got a great view of the carpet when it flies. I met Roy Disney when he sat here, and didn't meet Michael Eisner when he sat there. (Different shows of course). If it is good enough for them, it must be good enough for the rest of us.
Another great location is the front row on the mezzanine level. This is the best area for a view of the carpet when it flies.
I consider the front row of the theatre only so-so, as you miss the carpet flying, you are looking up the side of an elephant when the parade goes by and you're eyes are right at stage level. However, this is where everyone with priority seating goes - they always think front is best, not necessarily for this production.