THIS is the problem.
It isn't guests or even drunks, per se. It's Disney simply not staffing enough crowd control and security folks, period.
And DLR is much better at crowd control in a much tighter environment. Why WDW struggles with it, I can only chalk up to $$$.
I see it as more of a lack of training. Crowd control of a large environment - Lets use the University of Georgia's Sanford Stadium as an Example - 90,000 people on gameday. There's a multi-layer, giant cohesive plan to manage & protect that crowd as well as its entrance & exiting the area. Works pretty well, aside from having 90,000 drunk people.
Lets apply that to F&W and the dessert parties. You have inexperienced people with no concept of crowd control leading a group of 50-100+ people from point A to point B with a flashlight. Then they man the stairs, telling the daily paying guest that they may not view the fireworks from that spot. The guest gets indignent (not the best attitude but hey, seems to be the general entitled attitude of the average Disney guest, so , I'm generalizing because you people reinforce the stereotypes) and guests are directed elsewhere. Nowhere specific, just not here.
Lets take a farther step back. Try getting through the chokepoint at Mexico at 8pm. Try getting up or down MSUSA 1/2 hour before parade. Try getting near the hub between parade and Wishes. All of these are monumental because 20,000 people (or more) want to be on MSUSA for the parade & wishes and all you have to direct them are a bunch of college kids with a flashlight with no experience whatsoever on managing crowds, letalone common sense.
I've seen Reedy Creek EMS try to get through those crowds with a stretcher and its ugly because once again, the average Disney guest (see stereotype above) gets indignent because they're being inconvenienced... nevermind that someones life may be in danger in this case. But I've seen it and I've seen it first hand and honestly, if I'm RCES I want OCSO with me to get through those crowds.
You really want to improve guest traffic? Restrict what comes in. You want to bring a rolling cooler to feed 16 people in the park? Hell no. You want to bring in a stroller the size of a Prius? Hell no. Segway? You're kidding. Giant tripod to put in the middle of main street? Pfft, not with this attendance. You want to bring in a turbocharged ECV ("....
I feel so much shame, all I can do is try to make myself feel a little better by flying to Disnelyland on the weekend.....") and you better have a doctors note. Large strollers and ECVs are a problem. You want to bring an ECV in, no problem as long as you have your paperwork in line from your doctor.
You simply cannot have crowds of 20-30 thousand people in such a small area without effective, trained crowd control. Considering the "flat" MK attendance is 47,000/day (source=TEA), its going to get worse. Of course, nothing is going to change until someone gets badly hurt in a very public way.
(Oh and in defense of the stereotype above was the nice gentleman who wanted to start a fistfight in the line for Les Miserables earlier today. Society itself seems to be reinforcing that stereotype one on its own.)