The Fake (but one-day-will-be-real) Wedding: seating plan

Every bride I know has told me the seating chart is the hardest thing to do. I didn't believe them. So I tried.

My man has indulged me (bless his heart) and allowed me to make a guest list...you know, in case we come into some money and could get married this September!

I split the list into five categories:

1. Bride's family
2. Bride's friends
3. Groom's family
4. Groom's friends
5. Bride and Groom

I seated people from the same category together in groups of 7-8, and those under the Bride and Groom category (which I now realize is nonsensical as it doesn't refer to me or my man but to truly mutual friends) could be seated anywhere as they know both sets of our friends.

It took me two hours. And it only took that long because I had to copy and paste my worksheet into a Word document and out of the fabulous Knot workbook because I couldn't load all the names properly on my Macbook and I had to keep switching between apps.

Things I learned or am now considering:

1. This seating chart wasn't so hard BUT it will probably change 14 times as people RSVP no and I need to fill up different tables.
2. The memory of why two of your friends don't like each other hits you like a kick in the head when you see their names next to one another on the seating plan. 
3. Big families make for annoying seating plans. I feel obligated to seat my family nearest me, but between us, Chris and I have over 60 members of our families within two generations! I am imagining waving to my friends sitting in the corner, waiting for their chance to get a picture and a word with us...
4. With divorced parents, where do I place my sister?!
5. We're each having one attendant. Do I want :
1. a head table with four of us (bride, groom, MoH, BM), 
2. a head table with six of us (same, but with their dates), 
3. or no head table and sit with our parents,
4. or no head table and sit with our friends?

Have you had difficulty with your seating plan?