Does it matter which balloons you pop in KL?

I've wondered this kind of thing as well. I've wondered if the prize behind the balloons is decided when Sideshow You is loaded or at the moment I tap the balloon and do the probabilities change depending on which scenario is correct? Also, if the prizes are decided when it loads then is a prize chosen for behind each balloon or is it randomly chosen that whatever balloon is popped first will get prize X, second will get prize Y, and third prize Z? That would definitely alter the probabilities depending on which of those scenarios is correct. Of course there is no way of testing for those so unless one of the programmers tells us we will never know.