I do think it's rude for rides....however, I will say that the last two times we were in MK right at rope drop during EMH, either me or my husband high-tailed it to the Rapunzel meet and greet line and stood there while the rest of our party ran around and got fast passes (this was before the back end of the time window was enforced). I'd do it again, too. The CMs acted like it was pretty much par for that attraction...they asked each person in line how many were in their party. I guess I look at it differently in that case because the attraction wasn't open yet. Pretty tough to get a 5 year old to stand in line for an hour when the line isn't moving at all and all of Fantasyland is beckoning

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No one had a problem with it, and most parents were operating the same way...one parent had the kid and the other parent was texting them to come back as soon as it was time to start. I told the CM my husband would be bringing my daughter back when it was time to let the first group in, he went on counting until he reached 30 kids (or however many they actually let in) and put the rope down. That particular meet and greet is unique, I think, just because of how long it takes to get in if you aren't in that first group...and they only count children but adults are allowed in on the sidelines.