I realize this has been covered, over and over, but call me stupid, I'm still in the dark as to what we need, photos, etc.
We are flying in to Heathrow June one, two seniors, one adult, one 18year old, and one 13 year old. Five in all. We'll be in London a week. What do we get at heathrow, we don't care about the 2 for 1 deals. We just want tube tickets at the most economical rate. It is so confusing between travelcards, oystercards, and whether we need photos or not. I'd really appreciate any info. Thanks much.