Simple is how I wanted it to be as well. The day we will celebrate is 11.23.12 in Mexico not 12.27.12 when we legally got married (we did it backwards and got legally married after Mexico). Believe me my husband took full advantage of saying "well we aren't married yet" for that month that we weren't- got old real fast lol.
Anyways- we were planning on just going to the courthouse on our lunch break and then it ended up turning into our parents and siblings, and grandparents at our house with the family paster marrying us. I cooked dinner for everyone and my husband's grandma brought an ice cream cake. We both wore jeans and it was very casual- so it did not end up being just the two of us but was very casual and how I wanted it to be- so it worked out!
I feel like my FI would take advantage of the "not married yet" part haha. We'll be legally married before our wedding, so too bad for him. Missed that opportunity
I almost want to have someone random there as the witness instead of a friend or family member when we do it, specifically because I don't want it to feel important!
I read a story somewhere (possibly even on here) of a bride and groom who literally asked random people in the courthouse to be their witnesses!! Also read another where they asked a coworker and their wife who they had never met to be witnesses. I think that's kind of neat!