Some dinner invitation rules...
When invited to a party or holiday celebration you should have a snack at least one hour before the arrival time. Many times parties start later than expected and you will be famished and hungry enough to consume enough food for 3 people. Being a little hungry is the best setting so you can control your intake, especially if you hibernate after eating a huge meal on an empty stomach!Dress appropriately. Formal means formal. Jeans aren't formal. Many settings are casual. Inside parties are different. Wear something nice. unless it's poolside, leave the cutoffs and flip-flops at home. Don't go to a dinner in the same clothes you did gardening in.
Don't talk politics... unless you want to start a feud and have the cops come to break it up!
Happy Thanksgiving!