It all depends on what level of service you are looking for. There are 3 levels of campsites at Fort Wilderness:
Standard, which includes electric and water This includes the 1500 and 2000 loops
Full Hook Up, which includes electric, water and sewer (most of them are this way) This includes the 600, 800, 900, 1000, 1100, 1200, 1300, 1600, 1700, 1800, and 1900 loops.
Preferred, which includes electric, water, sewer and cable TV. As of the summer of 2005 high speed internet access was added to the preferred loops. See the section on "Internet Availability" below. The preferred sites are also in loops situated closer to the settlement which includes the marina, beach, restaurant, and many other activities. Also, if you plan on using the cable TV hook up, remember to bring a long coaxial cable to hook up with. If you don't have one Disney will be happy to sell you one.FW Camp Site The preferred loops include the 100, 200, 300, 400, 500, 700 and 1400 loops.
Now, with all that said most folks in tents reserve a standard site. As you can see, there are only two stndard loops 1500 and 2000. Between these two, 1500 is more in the center of action (across the street from the meadows complex) while the 2000 loop is a little more "off the beaten path", so a little quieter and has slightly larger sites for the most part.