Millionaire is an FBO at Wiley. I have never heard Sundance called that. They get a LOT of traffic of nice jets because they have really cheap prices on fuel. They are building a new big hangar to accommodate a few big jets.
The FBO at Sundance has a really fancy bathroom, and they have some nice facilities. Hangars are a little more, but they have some open up regularly. Guthrie/Edmond is full and few hangars open up. Both of them have free tie downs on the ramp.
Most of the time flying out of Guthrie there is nothing to look at except farmland and mega cities like Agro, Wildhorse, Dover, and Alpha and Omega are just a few miles apart, just west of Kingfisher.
From Sundance we will often be flying over OKC and Edmond so there is something on the ground to look at. Of course if we are flying west, it is back to farmland. Or exciting places like Dead Woman Crossing, Custer and Sidney's home town of Arapaho.
https://en.wikipedia.org/wiki/Dead_Women_Crossing,_Oklahoma