Anyone done one of the marathons at WDW?

I'm thinking of doing the Disney Wine and Dine 1/2 marathon this October. I just run for fun right now but I'm thinking about getting into (sort of) competitive running.

When my parents and I went in Jan., the "real" marathon was going on and some of the people I talked to, it was their first marathon and they were total novice runners.

I'm pretty sure I can maintain a 10 minute mile pace (I think the minimum is 16 min./mi.)

Any thoughts? Think it's worth it?