We are generally a pretty cashless family. I think that in the US you are almost always able to tip on a credit card with the exception of any sort of valet or porter. We’ve had to scramble in these cases before. However, in Disney we don’t use those services so that is fine. We’ve started to use Lyft over Uber for the ease of tipping within the app.
At Disney we almost never have cash and always just use our magic bands. This past trip we carried only magic bands and our drivers licenses. This is where we got burned this one time. We were at Food & Wine during the afternoon in September and there was the usual pouring rain storm. Well the outdoor booths close when it starts to thunder and they shut down their electronics. They will take cash for a while before the rain really gets going and they close completely and then when they reboot they will also be cash only. Well we didn’t even have our ATM cards to get cash so we were without any access and personally starving! So that was a bummer.
The silver lining was that my son had just fallen asleep so we made a run for the indoor craft beer area that was nice and dark and had a lovely charcuterie plate and cold beer so we did not starve or go thirsty, but next time we will bring some cash or our ATM card at the very least!