You have quite the complication there girl lol. Personaly, if I were in your shoes, I would just go with 'along with our parents' or 'together with our parents'. You may not have enough room on the invites to list all those people lol. I will probably go with something like that as well. My fiance's parents are still together but mine are divorced. If my mom didn't keep my dad's last name, then I'd probably would've listed all names ~ but to me, it looks odd to have printed 'MR. JOE SMITH AND MS. SHARON SMITH '. So, we're just going with 'together with our parents'. Go to ask.com and search for wedding invitation wording. You'll get more help there too. Good luck.