Hi Mary!
Welcome to planDisney!
I’m happy to report that if you have a park hopper, you can hop to any park at any time (pending the park is not at capacity) after scanning into the park where you made your park reservations. So, yes! You’ll be able to enter Epcot and then hop over to Magic Kingdom.
I did peek at
park reservation availability in early March, and it looks like there’s full availability as I’m writing this. It might be worth checking back to see if you can modify one of your Epcot park days to Magic Kingdom if you’d rather do that. If Magic Kingdom still has no availability for park reservations, I recommend checking back periodically to see if anything opens up.
If you do end up finding yourself with more time at Epcot, though, you’ll be getting to Disney World right after the
Flower & Garden Festival starts. That’s one of my favorite festivals each year! The topiaries around the park are always incredible.
This year marks the 30th anniversary of the festival, so keep an eye on the
Disney Parks blog as they announce any fun experiences that this special anniversary brings with it.
Enjoy springtime in Disney World!
Jenn J.