Hard to get into?
Toy Story Mania? Yes, get a FP as soon as possible. Even if you are able to ride first thing. You will most likely want to ride a second time.
Hollywood & Vine? Depends on when you are going. Try for an 8:00am ADR. The breakfast is good. If you are done before the rope drop, you will be on a different street than the rest of the park and you will be walked to join them and merge at the beginning of their line as the park opens.
Watch careful though, sometimes the CMs working your line can get to talking and not watch the other line.