Do you own your mobile or renting?
I've been in this situation , bottom line is that one of you will have to move before this issue is resolved.
Sounds like that park is not going to improve , to me your only option is to get out before something bad happen . That's what I did . Focus on making it happen .
I had the same issue last week in our retirement community with my neighbors under our apartment. Loud tv at 3am . I went down and told them to turn it down.
They are being evicted for repeated (3) noise violations. I even offered to setup earphone/headsets system for them at no charge.We have good management here. It's really all about respect and consideration for others.