Decided it was time to see Mystere after all these years.
It was too late to book the discounted $108.90 category 2 seats for $65 ($82.95 after taxes and fees), which appear to be only in sections 101, 105, 202 and 205 (the not so good category 2 sections).
Instead I went for the the dinner and show package which includes dinner at Gilley's for $67 ($85.81 after taxes and fees). They gave me a category 3 seat in section 203 row KK which is a $86.90 seat ($100.85 after taxes and fees). This seems like a prety good deal especially since I ended up in Greg's preferred section (though about 4 rows further back).
You can also get this deal with the TI buffet instead of Gilley's or for $129 you can eat at one of their two "gourmet" restaurants: Phil's Italian Steak House or Isla's Mexican Kitchen. I wonder if you get closer seats with the gourmet restaurants.
You need to book the dinner packages over the phone through the showroom: 866 286-3809.