Plural of last name?

Yep, it's Munozes! Like the name Gomez would be Gomezes or Jones would be Joneses

Here's a helpful link about it: https://www.dictionary.com/e/plural-last-name/

Munozes looks correct to me - it's your last name, though, so I think you can create a plural form that you and your spouse like!

Yes, Munozes would be correct.

I feel you on the plural not looking or sounding right! My FH's last name is Adams

The Adamses doesn't look right even though it is and "The Adams Family" would just create too many jokes about "The Addams Family" tv show!