Charging installation: e-tron charging at home

Hello together, I started to think about how this can or should be done with the shop at home. There were a lot of questions after a short time and I thought that we could look for answers and solutions together. So I created this thread and listed my questions. Of course I have already read a dangerous half-knowledge on some topics but “happy” usually taste information better. So… 1) it’s enough at home with 11kW What advantages/disadvantages are there to consider? 2) Is there any experience with any “wallboxes”? What should one pay attention to? 3) For business car drivers: What possibilities are there for billing with the employer? Is a wallbox with counters enough or rather a separate electricity meter (house connection) with monthly billing by the power provider? Look forward to your contributions