Sorry I missed this. I’m a bronze member. Only difference between bronze and silver is a membership card. I can get one of those any time.
Public liability insurance covers you outside of the UK.
Yes, plenty to learn and get your teeth into...
Easy to fix...
Below is the link to all of the downloads offered by DJI for the Mavic 3 Pro, including the User Manual.
After you read the Manual, read it again, you will be surprised what you missed the first time and you will be better...
Welcome from a short ways south of you. As already suggested: register with the CAA, get your GBR-OP, print it out on a clear plastic Dymo label and stick it to the top of your new drone. As long as you stick to Open Category A3 sub-category...