I fourth it!
This topic is great. I’m very into saying thank you to EVERYONE (even my best friend) doesn’t matter who, I say thank you to everyone and anyone for whatever they do. Once one of my friends asked me “why do u ALWAYS say thank you??” As if I was crazy. I was like “what’s wrong with saying thank you???”
I absolutely HATE when people aren’t friendly to waiters. When I’m on a date and the guy tells the waiter something instead of asking (ex. Get me 2 cups, instead of saying can I please have 2 cups) makes me cringe!!!!!