Welcome to planDisney, Srishti.
Fantasmic! is my favorite nighttime spectacular. The theme song is something of a family anthem in my home. We play it regularly, which always excites us for our next Disney adventure. My children like to act out the final fireworks scene by throwing cushions in the air as the song reaches its climax. "Some imagination, huh?"
Srishti, my personal advice to you would be to drive your car from
EPCOT and park at
Disney's Hollywood Studios. If you pay for
parking, you can park at multiple theme parks on the same day. Simply present your receipt and the Cast Member will wave you through. If you decide to leave your car at EPCOT and take
Disney Skyliner to Disney's Hollywood Studios, you're going to have some difficulty getting back to the EPCOT parking lot after Fantasmic! finishes. By the time you take Disney Skyliner back to EPCOT, the International Gateway entrance will likely be closed to people entering the park.
I hope that's clarifying, Srishti. Thanks so much for choosing to be our Guest. If you have any more questions about your upcoming trip, you have a friend in me.
Mike