The DL CMs can (probably) get you in, but the idea is that they are touring the park with you. So, everytime you re-enter the park, after leaving, the CM would have to be present to get you back in....... So that may or may not be a problem. I am not sure how they get Fast Passes though, now that you ask. The CM might have to ask a CM at each ride for them, showing their pass....
They also may have some one day hoppers to share with you. With those, you could re-enter the park as often as you wished, and get your own FP.
Edited to say this is how they do it at WDW, DL may be slightly different.