Oh bk, bk. I thought you were starting to get the hang of some of Blu-ray's modus operandi:
All Warners Blu-rays start without the menu. If you don't believe me, put in one of the Harry Potters or THE DARK KNIGHT (if you still have them) and see if they don't behave exactly the same. You just know when you have a Warner Blu-ray that you're going to have to cope with this in all likelihood.
There are TWO menu buttons on your remote. Find the one marked "Top Menu" and you can pull up a menu while the movie is playing and make adjustments. However, if it's the audio you want to change, I use the audio button on my Samsung remote which brings up the audio menu and you just arrow key your way to what you want.
If neither "Menu" nor "Top Menu" can get you away from ads or trailers or disclaimers (sometimes they can, sometimes they can't; every studio seems to author this stuff differently), I use the chapter skip button. Even if I have to hit it three or four times, it's still quuicker than using fast forward.
Just a few pointers.