Must see (as a contrast to Magic Kingdom):
Indy (get a fast pass 1ST thing upon entering the park, then ride later)
Pirates
It's a Small World - 100% better than MK's version.
(jmo) King Arthur's Carrousel - it's a great way to look at the beautiful facade of Fantasyland.
Teacups - if you can handle spinny rides
Storybook Land Canal Boats
Space Mountain if there is time.
You do need to allow time to walk around the park and drink it in. DL is rich in ornamental detail and quite beautiful. It's an attraction in its own right.