When Tusker House goes back to its normal buffet, I would HIGHLY recommend them for folks who like a tad bit of adventure with their dining. However, right now with their limited menu, it would not be a big draw for me.
Yak and Yeti is just mediocre Americanized food, IMO. It’s not bad, it’s just an average restaurant. I personally have had bad service there twice as a solo diner, and both times my observation my poor service was because I was solo, and not going to be a huge tip. So, groups may have better service there. I do think their QS dining options are good, but it’s tough to compete with Satuli’s and Flame Tree.