Two days is probably too soon to expect the queen to be released -- it would be for me. I've usually checked at 3 days and 5 days; if she's not out by then, I've pulled the cork and let her out. As for the bees flying, I'd venture a guess to say that the older bees in that package who would be inclined to forage may have drifted to the first hive. I don't think the difference in the number of frames would have any effect on getting them started.
I'm assuming since you got 10 frames in one of the hives with the queen cage hanging down, you're starting on foundation? And you hung the queen cage in such a way that the bees have direct access to the screen, and the exit from the cage isn't blocked? And I assume you are feeding both hives? A pollen patty might help, too. If these are all done, I wouldn't do anything right now. Check again when you get back into town in three days. But it will still take a while longer to get the foragers equal between the hives.
You could also look into the first hive and see how it compares with the second one.
(But of course, I could be all wrong about this!)