I looked at Alpharooms, and from DFW, the price for total is about the same as a package deal. There are never any deals out of DFW airport.
I don't think I've ever booked a trip on a Friday-Sunday. It's been my experience that the best time to book a trip is on a Tuesday or Wednesday. The fluctuation in price is usually the airfare which has a tendency to be cheaper mid-week. I don't know why they do that but for me it's been pretty consistent and we've been to TTR over 20 times. If you can hold out until next week - give it a shot. Firm
Price is going up because the hotel rooms are being sold out fast right now for Sep. I will be at TTR from Aug 28 - sep 11