1) What brand/model tent do you have?
I have a Greatland 2 room dome tent with a screen porch.
I don't use the divider so I use it as a large one room tent.
2) What size?
I believe it's 16'W x 15'D, but that includes the porch area.
3) Cabin or dome and why you prefer one or the other.
I have the dome version, but I actually prefer cabin style since they generally have more headroom. For being a "dome" it's pretty generously sized. I'm 5'8" and I can stand up in the center of my tent which works for me! Also since it's usually just me setting it up, I find it easier to set up a dome style solo than a cabin style.
4) How many in your family?
4 + a small dog but my husband doesn't camp (okay he's giving it a try this weekend).

Usually it's just me and the kids and the dog and we have tons of room!
5) Do you use cots, air mattreses, sleeping pads, bags, etc and how many can you fit in your tent and would there be room to spare?
Air mattresses and sleeping bags. I have two air mattresses that were handed down from my parents - about 25" wide and 72" long. My youngest daughter sleeps in her pack 'n' play crib. I'd like to purchase two Big Agnes air mattresses eventually.
I have 108" that I consider sleepable area side to side (if an adult sits up quickly they won't bump their head on the tent). The air mattresses I have and like work well with my tent. I can fit four and have room for a bag for each person and there's still room for the dog. I wouldn't want to sleep the 7-8 the box says it can - 4 is quite comfortable.
6) Did you seam seal or dry coat it and did it keep you dry?
I seam sealed because I thought I should.

I toss tarps over the doors/windows at the ends of my tent in threatening weather anyhow so I couldn't tell you if it would leak or not.
7) Do you use a fan, a/c or heater and how is it set up?
I have not used any of those but I've never needed to either. If I were to be camping with electric and wanted to use my fan I would just leave an area in the center and toss my oscillating fan on a crate and let it cool the place down.
8) Do you use a screen room and what brand and size?
My attached porch is my screen room. I can fit 4 folding camp chairs in there snugly.
I got my tent at Target last year right after Thanksgiving. It was originally $129 marked all the way down to $27. Yeah, I snatched that puppy up despite it's terrible reviews. No complaints - yet. They now carry a slightly different version
a cabin tent I believe. If that one goes that low too I may be starting a tent collection.
My whole family is going camping soon and I will definately post some pictures! The non-camping husband is camping so I will be documenting the moment!