no from Heathrow. It was just generally poor service. In the "old" Doha airport had one toilet it appeared. Also was in the industry and knew how they treat their emoyees.
I am a solo traveller and was walking down back alleys at night. Felt totally safe. I was walking every where but it was hot. Not sure there was a lot for kids to do.
basically you get a visa exemption and before it expires pop down to the immigration office complete the documents and slap 1900 baht on the table you have an extension. Before it expires, leave or you will over stay an get a black jack on your file.
At the moment things are a bit in the air. You can leave and return and get another visa exempt. It's called a border bounce. But that is not the intention of an exempt visa . So you are at the mercy of the IO. People have been denied entry.