Hello Whitney,
Bright Suns and Rising Moons!
You'll be happy to know that you don't have to purchase a separate ticket to travel to a galaxy far, far away.
Star Wars: Galaxy's Edge is an area located inside of Disney's Hollywood Studios. You'll be able to hop aboard the
Millennium Falcon, explore Black Spire Outpost on the Planet Batuu, and
accept a mission from the Resistance. While you're there, be sure to talk to the residents of Batuu (cast members). It's fun to ask them where they live or what brought them to Black Spire Outpost.
As you can imagine, the two ride attractions in Galaxy's edge are extremely popular, and standby lines can be really long. You may want to consider either purchasing the new
Disney Genie+ and/or Individual Lightning Lane to decrease your wait time for Smuggler's Run and/or Rise of the Resistance, or try to hop on one of these when you first enter the park for the day.
Some activities, like
building a lightsaber at Savi's Workshop, or
creating a droid at Droid Depot, require advance reservations that can be made up to 60 days prior to your trip. You may also want to make a reservation to grab a drink at
Oga's Cantina.
Hope this helps. Have a magical vacation, and may the Force be with you!
Diane