Standing shoulder to shoulder in line across the path does not constitute assault, particularly if the person who is cutting the line has no reasonable expectation of being allowed ahead of the person blocking their path.
A line jumper barging into someone who is blocking their way as they cut the line could be construed as battery under Florida law. If they threaten physical violence before doing so, it could include a charge of assault. Here's some light reading on the subject...
http://www.leg.state.fl.us/statutes...ng=&URL=0700-0799/0784/Sections/0784.011.html
http://www.leg.state.fl.us/statutes...ing=&URL=0700-0799/0784/Sections/0784.03.html
Besides being illegal, it's just plain rude, spoiled and childish. Choosing to commit a physical assault in response to someone non-belligerently holding their own place in line is an inappropriate response, which an intelligent person would have learned in elementary school.
You might be at Disney World with your family, but when you didn't get in line WITH your family, as far as I'm concerned, you just declared your intent to ride the ride alone.
Yes, there are always exceptions, such as illness, sudden calls of nature and the like, but getting FastPasses, buying refreshments, or riding other rides for your own convenience at the expense of others who are patiently waiting in line ARE NOT acceptable exceptions.
If your family/group isn't together when they get in line, they should have no expectation of riding together.
Let me say it again... The family that gets in line together, should not have to whine together.
Seriously, I don't understand why some people here are so quick to defend the churlish bullies or wanna-be scam artists who never learned that getting in line and waiting your turn is the civilized, accepted norm.
Of course, this is just my own not-so-humble opinion.