When you add an apostrophe to your last name, it makes it possessive, not plural. Holiday cards are the biggest offenders:
Happy Holidays from the Perottis-- YES
Happy Holidays from the Perotti's -- NO!
We're going out with the Andersons-- YES!
We're going out with the Anderson's-- NO!
Got it? I am available for holiday card consultation ;)
http://www.cribnoteskelly.com/cnblogwe-have-a-lot-to-say/feeling-possessive?fbclid=IwAR2HTKVSLsBbx_Q_qqcbmWRfnJqIsz6UXIflqz4QEf8vhLFUSS8MxSDNw4E