The Path of the Jedi shows clips from all the previous movies and then rolls into the trailer that was released a few weeks ago. If you've already seen that, it will be nothing new. (This is the US trailer, not the international one that had a lot more spoilers in it.) It thought it was really cool how it focused on Darth and Luke and how their lives progressed to lead them to their places.
There is one new scene in Star Tours and it's currently in every ride mix, so not random. After Season of the Force, it will just be one of the random options you can get, not every ride.
I went all through Launch Bay and looked at everything but didn't read any of the placards for the exhibits. It was all stuff I had seen before (costumes, ships and things), I just didn't want the details from the signs.
Star Tours doesn't have any spoilers and it was awesome!