If your stores readers are down and you're on DTO, the best script I was able to come up with is

DTO: hey welcome to starbucks, my name's [name]. Are you picking up a mobile order today

[customer responds. If they say yes, get the name, if they say no, continue with the next bit]

DTO: in that case, i want to let you know that our card reader's not working, so i can only accept payment in the form of cash, starbucks app or starbucks gift card

Because people get mad if u dont mention it until the end, but they also get mad if they have a mobile order to pick up and you give them the whole rant first