Less is more when it come to Facilities. One Hotel, 1 Restaurant, 1 Gift Shop, 1 Bowling Alley. All close to the entrance.
Build a Power Station.
Then just build a giant enclosure, sectioned off into 6 paddocks while Leaving a walled alleyway from a Hammond Center. This way when you release a dinosaur, you can open a gate specifically for their paddock. Put water to cross the fences between 2 sections. Get a Ranger Station and ACU Station. Fill with dinosaurs! Fill one with the low population herbivores, 1 with 2 Ceras or 3 Diplos, throw some version of Triceratops, Stegos, whatever you want. Throw a T-Rex in one. Make sure (for variety’s sake) you throw a Gallimimus, Archeo, and Struthiomimus somewhere, and if you haven’t hit 5 stars for Dinosaurs, then be ready to hatch as many high value, not yet used, dinos back to back. I-Rex, I-Raptor, whatever. Just release them all at once. Your rating will fill up quickly.
DO NOT MAKE RAPTORS.
Once you’ve done all of this, you should hit 5 stars for both Dinosaurs and Facility. If you hit 5 stars for Dinosaurs, but your Facility rating is not there yet, close your park. You are probably over-crowded. You’ll hit it quickly.
I hit 5 stars on all 5 islands by using this method.
You do not have to have 5 Stars on all Islands at the same time. Once you reach 5 Stars for the Island, it does not matter if it falls back down again.