I say as long as they don't whine about not having a long enough break between matches, they should be able to wrestle two brackets in the same session. As long as they don't expect to put the tourney on hold for them, more power to them. We've seen it in Oklahoma a lot, and it hasn't been an issue. Not going to BS you, there are times when our kid has walked off the 10u mat and walked right onto the 12u mat to wrestle again. It is a good way to get into "wrestling shape", getting a bunch of matches in a day.