I'm sorting through information about the tube, and it sounds as though, except for edge cases involving boat rides, the Oyster card is not really needed. Both Oyster and credit card taps have the same daily caps, etc.
We have fee-free credit cards, no exchange commission.
You can load a 7-day pass onto Oyster, of course, but we're really only in town for 5 days (though I'm sticking around for a few more days but will be at a conference.)
Am I missing something? It's pretty confusing since many online sources disagree, probably because of recent changes.
Thanks for any advice.