I appreciate that parents might not want to wait for half an hour (or more!) before a parade with young children as they're bound to get restless but they should still appreciate that other people
have made the effort to get there early to secure a good spot. Time and again you see people arrive at the very last minute and expect to get an excellent view (not just at Disney parks of course - I went to New York last Thanksgiving to see the parade and could not believe the number of people turning up when the Parade was due to start who then figured they could shove their way to the front).
Of course, as people have said, it's no problem to let small children sit or stand in front of you (mind you, I'm quite short myself!) but again, as commented above, it's the parents. I was videoing the Once Upon a Dream Parade and had to cut a fair chunk out because a heated argument developed between a woman and her young grandson (who had been waiting a while beforehand) and another woman who pushed her way through with her children, not caring about the child who was already there.
As for being in the Park generally, as an adult without children, I've done it a couple of times now and haven't felt uncomfortable - what can I say, I'm a total Disney nut and love visiting the Parks! I have stopped trying to get my photo taken with characters - am happy getting good clear shots of them to put on my website - although of course that may just be because I'm older and, well, bigger now than when I first started going...
