Future Husband and I are having a nontraditional wedding ceremony with five people present - myself, Future Husband, our child, my BFF/MoH, and MoH's husband. (Six people if you include officiant/JP/courthouse person). We're hoping for a simple courthouse ceremony but will settle for a JP at a neutral location if we don't have other options.
Dilemma: My mother has made it clear that she'll be attending the ceremony, regardless of whether or not we explicitly invite her. (She'll know when/where it is - she's keeping our child during our honeymoon, aka "cross-country drive with a full U-Haul".) My father hasn't been informed of our engagement yet (long story, feel free to ask for details). Mom and Dad have been divorced for 15+ years, are remarried, and hate each other (just one part of why our wedding is "private" - shouldn't invite others and leave parents out!). I am close to both of them.
If bride's parents are ridiculously offended by the idea of not being invited or present/insist on showing up anyway, how would one handle that? I had in mind something along the lines of, "If not being present is a grave offense and you won't be able to forgive me for it, then the date and time is xx yy." Something tells me that's not the most kosher, but that's all I've got. I would MUCH RATHER they not come, but I don't want to ruin my relationship with one or both parents (particularly if Mom shows up anyway and Dad finds out).
Subquestion: If they both show up, whether made aware of the date/time or not, am I obligated to host some kind of reception for them? The last time they had a meal together was when Future Husband and I told them that we were (unmarried teenagers) expecting a baby, and we Sat Down and had a Come to Jesus talk (awkward.as.heck).
Thank you in advance for your suggestions. I tried to keep it brief.