I sat there once..it's not a BAD seat. In some theaters, the stage is really tall - so for example, when I saw Annie from the front row, I could barely see the dog and much of the dancing. Also, my friend just said she had front row at Something Rotten, and missed the tap dancing as she couldn't see any feet. I didn't find that problem here. I think the leg room is similar to the regular seats - or slightly better than some.
That said, you have more depth perception from a few rows back so for a first time viewer, I can see why those seats would be preferable. You do get a good view of the orchestra from the front row if that is of any interest to you.