Hi all, I apologize in advance if my questions have already been asked but I'm trying to find some definitive answers

We're checking into Poly on Feb 3 for the week. I have a one and six year old. Part of the reason I wanted to try Poly is so either myself or DH can venture out in the evenings with our six year old if the baby gets cranky and needs to sleep.
I've read a few things about the bungalows taking up a huge portion of the beach area (I've never been to Poly before so I don't know the layout). Can you still go on the beach and see the fireworks or is the view obstructed? Is the beach you'd be able to see fireworks from the same as where you'd view the EWP? Also, where is the nighttime movie being shown and is it in the same general area as where you'd view the fireworks/EWP?
And one last thing, and this may be a silly question bc I know it's Disney and kid friendly by default, but is it crazy around these public areas of the Poly at night? Im guessing non Poly guests use these viewing areas correct? Is there any reason to worry it may get rowdy, loud or crazy in any way at night? I'd like for our six year old to be able to enjoy being so close to MK and seeing the night time shows but I also don't want to be in the middle of any kind of crazy crowds that feel unmanageable. We stayed at AKL last time and it was very quiet at night.
Thanks!