Hi Jessica!
Welcome to planDisney! Thanks for stopping by with this great question. You have come to the perfect place to help plan out your park day!
With your arrival upcoming in August, park hours have not been released just yet. They have only been posted until the beginning of July. Based on this information, it seems
Disney's Hollywood Studios has been staying open until 9 PM and
Fantasmic! has started between 9 PM and 9:15 PM each night. These times may change when the official schedule is released, but this should give you a good idea of the approximate times. Also, if Fantasmic! is shown at or just after park closing, you will be unable to ride any attractions after the show is over. I suggest continuing to check back to the Walt Disney World website for updated park hours.
I'm excited you are considering
Sci-Fi Dine-In Theater Restaurant to eat at during your visit! I suggest looking for an Advanced Dining Reservation before 7 PM, this way you'll have enough time to eat and still make it over to get in line for the nighttime show. However, if you don't want to wait in line for Fantasmic!, you can book a
Fantasmic! Dining Package and eat at Sci-Fi Dine-In for dinner. Not only do you get to experience this wonderfully themed dining location, but you also get guaranteed seating for the show. Essentially, you can eat dinner on the earlier side, ride a few attractions, then head over to Fantasmic! to close out the night.
Jessica, I hope you have a magical time during your upcoming visit!
Stop back and see us again at planDisney!
See ya real soon!
Greg