I'd go ahead and ask them to come after talking to your husband about it.

They may actually prefer the peace and quiet in your house and find it comforting, not boring!

I had my husbands father and step-mom here for eleven Christmas' in a row. They'd stay with us for two or three days.

I miss her and wish she could be with us again. In fact, I liked her better than my father-in-law.

We rarely got asked down to Pa. where my husband is from. I had to do all the asking and begging.

I'd have really appreciated an invitation like yours so go ahead and try it. If they say no it's their loss, not yours and you can say you did try.