I'm so tired of the "I had to put the stroller away" excuse. Heres a thought.... Everyone in the party to go park the stroller together - Whats so hard about that?? Its not like your the first person in creation that had to take a stroller to Disney World people!!! Personally, that is what we always did (go as a group to park the stroller, go as a group to get in line), and if you ask me,
its the only right way to do it. Sorry, no matter what, if you hopping infront of someone in line (even if your only one person), you are line hopping - its pretty simple math.

Now, will I get in a huff about one Dad catching up to his wife and child? Probably not. However, I still think your very wrong for thinking its OK to do, and not think to highly of you. JMO
Oh, and the "My child had to go to the bathroom" excuse... If that happens to us, its our problem. I don't make it others problems by leaving the line for 20 minutes, then cutting back in there infront of them because my DD just couldn't hold it. If we really still want to get on that ride, we will get back at the end. Does it suck to have to do that? Yeah, it does. But I'd rather do the right thing. Plus, how many people do you think used the "I'm not cutting, my kid just went to the bathroom" line in a day???