OnlyDisney,
Melissa is correct and I agree with her. Whatever tent sizes you end up with, I would call and have a note added to your reservation noting the sizes. Although you have reserved a Full site, you asked for a comparison to the Tent loops. On a past trip I took a few pictures and measurements of the 1500 loop, a tent loop, and a few other site types around. There is variation.
Here is a small tent site, #1501. Note the driveway is only 12 feet wide so only one "big" tent would fit here.
Some tent sites are big in 1500. Here is a picture of #1512 - it's huge.
Some 1500 sites have obstructions. I think this is 1510.
I took a few measurements of some sites. Here is a diagram of how I measured and then the data (err'body loves data).
What's the moral of the story? I think one tent with any dimension bigger than 12 feet needs to be noted on a reservation (given you might be assigned a small site) since the driveway is 12 feet wide on the Tent and Full sites. If you have multiple tents and the sum of the two smallest dimensions exceeds 12 feet, note it. Give them enough information to try to help you get what you want.
Tenting is a great way to go (as long as it's not summer).
Bama Ed
PS - having site measurements are essentially no help at all unless you know what site you'll end up with, right? This is just a guide.
