My trip dates are 12/12-12/15. We had planned on doing IoA on the arrival day and then USH on Saturday. We were originally supposed to be at the Other Guys all week, but I had an unexpected work trip pop up in the middle, so we decided to do this instead. But I had already paid for a hard-ticket event with the Other Guys, so we thought we'd do one day there too.
We've had an on-property Universal stay before, around the same time, and basically everything was walk-on. But this was pre-Hagrid, so I don't know how that's going to affect things, especially with the hours being what they are.