I understand. Does your state have a restaurant cleanliness/sanitation grading system? Mine does and restaurants are required by law to put their grade score up on the front door. But even still, if there is residue or something like lipstick marks remaining on a coffee mug, of course I immediately address the restaurant servers.
Re: lemons. I use them on my hands if unable to wash or if without hand sanitizer gel. LoL
Re: dishwashing. My other pet peeve is old or unclean sponges. Or when people use their dish sponge for things beyond dishes...like to clean the countertops, or other areas. *faints*
Here’s something most people never think about -— how absolutely filthy and germ ridden a restaurant menu is. You sit down, handle the menu all over, (just like the last 100 people before you did) then, use your contaminated hands to eat finger foods