I'll most likely continue with the amounts as I do now... it's for the service I receive, not for the amount I pay....just me. Right now I always try to pay the tip in cash even if I use a c/c for the reminding amount.Those Domino's ads where the guy is asked for a tip for everything are true. If the govt drops taxing them can we tip less since they will get to keep more .?
If it changes I'll just use the c/c for the whole amount... (cash back, ya know)