I just bought the DL version of Ridemax for our 2 day trip and I have to say I'm a little disappointed. It doesn't include any of the shows and doesn't have the option of designating where you will take your meal breaks. I used the program for our WDW trip last year and found it incredibly useful. I know the WDW had those options, so it was a bit of a bummer.
I'm really familiar with DL (been going there my whole life), so I don't think it helped very much in terms of my planning. The only reason I bought it is this is the first time we're going with our DS2, and I wanted some help strategizing. When I input the rides, I got back basically what I would have done anyway on my instincts. And I'm on my own timing meals and shows, anyway!
That being said, if DL is totally new to you, I'd imagine it would be much better than flying blind. GL.