I've been living abroad for over half my life in a country where tipping is not the norm. At most you would round up. 19€ bill? Here's a 20, keep this change.
Going to the US soon to visit family and the whole idea of tipping makes me nervous. It seems there's a lot of discussion about getting rid of tipping, but I don't know how much has changed in this regard.
The system seems ridiculously unfair, and that extra expense in a country where everything is already so expensive really makes a difference.
So will AITA if I don't tip? Is it really my personal responsibility to make sure my server is paid enough?
Try to tip 10% at absolutely minimum, so a $19 bill would be around $21, but I would try to add $1 or $2.
If you pay with a credit card there will be a line where you can write down the tip, and sometimes they will have suggested tip amounts.
If the state you’re going to has 10% sales tax, you can just add however much the tax was, plus alpha.
Sometimes, at some establishments, if you forget the server will run after you and ask for a tip, assuming it was a mistake on your part. Not really that common though!