L visa questions [uk]

[matirdambj]

I am planning on travelling to China for my honeymoon. I am in a same sex relationship so I require an L visa. My partners family and friends will be supplying an invitation letter and I had some questions around this

1. Is there a standard form that needs to be filled out for an invitation letter?
2. Am I required to book / supply information of flight tickets still? 10.0.0.0.1 192.168.1.254

If I am travelling over multiple provinces, how does registering with the police work?