Those WDW guys are gettin' kinda stupid.
You have to know how to use the reservations system.
I checked dates arriving 2/2/14 Sunday and out 2/8/14 Saturday and as you said, only Tent sites.
I check dates arriving 2/2/14 Sunday and out 3/1/14 Saturday and got availability in all 4 site types.
So book a longer reservation than what you want, then call back a few days later and drop the unwanted days. The system has been this way for years but usually only around popular/holiday times and not early Feb which is NOT that busy. As Scupper says, it IS popular with snow birds etc but it is nowhere near full. You might ask, how do I know that? DUH! if it was nearly full it would be a higher rate period.
Be aware rates jack up sky high around Valentines Day. Or use a
travel agent who can see availability that we don't with the stupid system (at no cost to you of course). After Valentines you start getting into various spring break times for schools systems all over the East coast (like mine) which means more visitors.
When will these silly stupid folks learn? All these sites will be going empty and then they'll get zero revenue or dump them on Expedia or Orbitz (something they haven't done yet). Or use dynamic pricing.
Sometimes the big Disney corporate types are stupid. What can I say? They'd rather have a high marginal rate for the few folks who are booked rather than filling the campground up every night (actually leave one site empty right? any MBA types know why?) and maximize total revenue and contribution. That tells me how they are measured, paid, and rewarded. When will they wake up and take the money and profit instead?
Bama Ed