day-trip in Inner Mongolia

Hey, we would like to do a day-trip in next week to either Gegentala or Xilamuren Grassland? Which one would be better in mid-July? Is it possible to do day-trips and if not how much does a stay-over in a traditional tent costs?

I would be thankful for any answer!! You guys are great by the way!! I really appreciate this website for all the people that anwser the questions!! :)