Yes but the challenge during busier times like Christmas is ensuring you can swap your reservation back to your original park if that is your intention. When available, an AP can book Epcot, obtain a VQ and then change their park reservation back to the park they wish to start at. The challenge is, it’s not always possible to do this during times when AP reservations are filling to capacity.
Note, a GotG VQ can be used from the time it is called until park close. Once it is called, you do not need to return in your window.