My internal clock jumped an hour a week ago due to a migraine, so I left it there in order to avoid the problem in a week’s time.

That’s not the recommended way to adjust the body clock though.

Some people are in industries where tipping is possible, others are in industries where it isn’t.

Since this is Europe and (theoretically at least) everyone is being paid a fair wage for the job they do, tipping would be unfair and should therefore not be encouraged.

If you live in a third world country where people serving you do not earn a fair wage then that’s a different matter. I’m very glad I don’t live in such a country. But if tipping culture were to become normalised it might lead to such a situation here too.