I was on the Wonder last week and overheard people being actively turned away from the theatre with food in their hands. I asked if I could bring in my hot cocoa (it was ARCTIC in there) and they said yes.
In terms of room service, I never did find a menu, in the app or otherwise, but I knew what I wanted. I will say that the All Hands On Deck only came with four crackers, which made me a little cranky as I had tons of cheese left. However, the service was super speedy. They were there in under 10 minutes! It's usually much longer.