The reliable way to hire a tradesperson

What is the best Artificial Grass for children and animals and do you need to maintain it. As I am unable to cut grass or maintain garden looking for easy attractive looking garden with minimal work

We are in the process of sorting our back garden at the moment its way to uneven for the kids to play outside. After inspection with a screwdriver I have found concrete/slabs under the lawn due to being neglected for years before we moved in causing it to be uneven. How do I find all the slaps and what is the best way to progress for a level back garden?

I am planning to replace my bath with a low-profile shower tray, wall panels and a glass screen. The existing layout and plumbing locations will remain the same where possible. I may remove the tiles myself and I will supply all materials. My question is: for a project like this, is there usually a significant cost difference between an exposed shower valve and a concealed valve? Also, is there normally a worthwhile saving if I remove the tiles myself before the fitter starts? Thanks