Our family was there two weeks ago and stayed at BWV and you don't need to go to the main entrance. You can enter at the International Gateway and they will let you in before the official start time so that you can make your way into the park before they "officially" open. The CMs then walk you to Soarin' so that there isn't a complete mad rush to get the Land Pavilion.
I really enjoyed entering the park this way as it felt less stressful (probably just my imagination)! Also, it was only a 10 minute walk from BWV to the International Gateway, what a treat!
Enjoy your upcoming vacation!