Personally, the number one thing that annoys me the most is customers who have you run around like crazy. I could go to a table and they’ll ask for straws, okay cool no problem. As soon as I give them the straws they ask for a refill, okay cool. I give them their refills and they ask for napkins when they could’ve asked me before. It’s very time consuming and I could be doing other things. Another one is customers being rude and impatient when they see that I am clearly busy with other tables. I am just one person and can’t do everything at once. Hope this answered your question.