I never had a digital camera. I have no idea about the "etiquette" for onboard photography nor about the technicalities (flash, no flash)

At the end of this month I will be flying MEX-FRA on LH, C and then FRA-EZE on F. I want to document every aspect of the trip since for many years this will be my first long-haul on vacation. I´ve had many long-hauls but mainly for work. No time for pictures but only for sleep and WORK.

My camera is a Sony Cyber-shot 10.1 effective Megapixels my brother got for me back in September.

General questions:

1) Is photography allowed on board?
2) What is LH´s policiy for photography?
3) Can I take pics at FRA airport?
4) Most of the flights are night time. Are pictures allowed? Flash no flash?

Since my experience is pretty limited, these are the few questions I came up with. More help would be appreciated. Thanks in advance.