Hi Valerie, and welcome back to planDisney!
This is a great question, and I do miss the days when my babies were younger and had access to the (now closed) Honey I Shrunk the Kids Movie Set Adventure.
While there is no formal play area at
Disney's Hollywood Studios, I find the open area in the Grand Avenue near the entrance of
Muppet*Vision 3D (in front of the Miss Piggy Fountain) an excellent place to let the little ones explore and even take a break as the restrooms are in that area as well. In addition, as an alternative, if you would like to take a break from the “outside,” I recommend the
Beauty & The Beast Live on Stage,
For the First Time in Forever: A Frozen Sing-Along Celebration, the
Lightning McQueen Racing Academy, and more. Creating those magical memories for your children will be embedded in your heart for years to come.
Please let us know if you need additional assistance.
Have a magical time!
Raquel