I think 1500 loop is typically quieter than the other tent loop. If distance to the bathrooms is not an issue the sites closer to the canal have some nice views.
^^^ THIS ^^^
I have a pop-up camper and have stayed in the "Tent" loops (1500 and 2000) many times.
1500 is closer to the core (pool, Trading Post, movie/singalong) and is also a smaller loop (20 or 21 sites). Sites along the outside back of the loop back up to the canal. It's a very peaceful and quiet place to sit and relax. My favorite sites along the canal are (in this order since you are in a tent): 1511, 1510, 1514, then 1513 (1512 is an interior site). 1510 has a tree or two inside the tent pad (non-pavement) so my pop-up would not work there but your tent should.
Three steps to improve your chances of getting one of these:
A. Add a note now to your reservation to "request a site in loop 1500".
B. Show up as early as possible on your arrival day because depending on what you get you may need to ....
C. .... ask if any of those favorite sites above are available and can they swap you over to that site (possible if you check-in before the other site's guest does).
Hope you are happy with whatever you end up with. Of course, it's just a matter of what will be available the morning of your arrival day.
Bama Ed
PS - I had 1513 for Thanksgiving 2009 and enjoyed it very much.