What about using "bocsi" for sorry? Do you think it is worth adding?
about 'bocsi': besides of being very very informal, it is kinda stupid using diminutive where it is not absolutely necessary. think of a counterfeit LV handbag and a genuine duckface selfie.
Counterfeit LV handbag and duckface selfies go better with "bocsika" which is an even more diminutive and more stupid form.
I don't think so: "bocsi" is very informal. You can use it with people whom you can lightheartedly can say "thankies!"
Um, I say bocsi to everyone when I'm in Budapest and bump into someone in a shop for instance. :D
For one who seems to be foreigner it is forgiveable but you may be sure that tha shop assistant girls giggled behind your back and did funny faces. ;)