WARNING! The cabins do not come with bedding or towels. This isn't mentioned anywhere on the Hotels.com listing. Also, you can't check in after 10pm. We got there at 9:58pm and were initially told we would have to come back in the morning, but luckily after a brief discussion the guy was nice enough to let us in. I don't really blame Thunderbird for this, I blame Hotels.com for not making this information clear. We checked in and then I had to drive to Walmart and buy blankets, sheets and towels. My kids were up until midnight before we sorted that out.
All that said, the resort was nice (by campground standards) and my kids like the playground and the bunk beds. I'd stay there again, but I would know to get there early and bring my own bedding and towels.