Anthony,
Thanks for asking your question to planDisney!
You will simply love
DiveQuest! My wife and I have done it several times, and we really enjoyed the experience. Unfortunately no, you cannot walk through EPCOT via the International Gateway to get to the front where the experience starts, since park hopping hours will not yet have started.
RECOMMENDATIONGetting from your morning at
Disney's Hollywood Studios to the front of
EPCOT does not have to be a real headache. Sure, it would be more fun to ride the
Disney Skyliner to EPCOT and walk through the park, but there are alternatives. What I would suggest you do is ride the Skyliner to
Disney's Caribbean Beach Resort, and then take a bus from there to EPCOT. This will get you to your destination fairly easily, and you will be off to your underwater adventure!
Please feel free to
write me back directly if you have any follow-up questions.
Have a Magical Vacation!
Doug