Just pick the bits of the PA you want. Don't talk about where you are with a moving map because if you don't tally with what it says (and some of them show bizarre place names), you will cause instant panic "oh my God, the pilot's lost! He says we're at Geneva and the map says Aosta!". Only ever briefly point out views because most people can't see them.
er82- try flying BA! Even first time travellers will be looking up at the ceiling wondering why buying an airline ticket is an excuse for 30 people to talk at them on the PA non-stop and spoil their flight and stop them sleeping! It\'s becoming the joke of the industry. As Cabin Crew pay has risen and overtaken copilot pay, it seems to be thought that they must make their presence \'obvious\'.