There are no "Dinner Shows" as such in the Magic Kingdom.
The Liberty Tree Tavern is a family style, all you care to eat, meal with characters, if that is of interest to you. The characters come to each table for pictures and autographs.
There are 3 "Dinner Shows" in WDW. 2 are held at Fort Wilderness Campground and one is held at the Polynesian Hotel.
The Hoop De Doo Review at FW is very popular. It is a chicken and ribs meal with a show full of singing, dancing and corny jokes. We love it.
Mickey's Backyard Barbeque is held outdoors at FW. There are characters and music and line dancing all take place. It is a buffet barbeque.
The Laua is held at the Polynesian hotel. It is a hawaiian style meal with a show with dancers and singers etc, like a luau in Hawaii.
All of these dinner shows would be 2 TS credits, and the Liberty Tree Tavern in the MK is 1 TS credit.
Hope this helps.