OneArt- The ticket can probably be used by another person (not sure). We do normally communicate in person about any business matters though we rarely have a business matter to discuss.
peacetoday- BD was during the holiday season and we did still celebrate the holidays together as a family.
Gordie- I can see my husband being mad either way as well. It seems like he just wants to be mad most of the time. About anything.
I am leaning toward an invite and trying to be as low key as possible about it.