It can be done if you plan you day well and start early. I assume that you don't have kids to consider? If you just a small group of teenagers or adults then you'd probably have a good crack at it.
The biggest stumbler is line times, but if you pay the $20.00 for a book of express tickets then you'd have a better chance.
Personally you'd never get me to pay for one of those books, but if time is an issue then I guess they're worth it.