Oh, definitely, they bring in extra caterers and staff for parties. But I didn't mention it before because I've seen a lot of fic where they do bring in extra people for parties, but Alfred does all the cleaning, cooking, and maintenance for the entire manor, PLUS all of Batman's support needs, and no. Just cleaning the manor--no maintenance, no cooking, no superhero support--would be a full time job. We're not talking a suburban ranch!