taking baby out

When was the first time you took your baby out to a restaurant? 
My husband has a work lunch that we were thinking of going to but our son will only be a month old. I am ebf so I know he's full of my antibodies but I'm still concerned with taking him out. I don't think the restaurant will be busy because where we live is only busy from June-end of August. 
Just wondering when others took their babies out other then a quick run to the store