I think alcohol should be out of the parks as well, except in select situations/restaurants.
I'd vote for hard liquor only at hotels (with some kind of enforced limit linked to park ticket) and select countries in EPCOT with the same control.
I'm all for drinking and even legalized drugs, but they are not great for a family place like Disney. I've seen enough to know what I'm talking about too. It's not conjecture.
Smoking in general is disgusting and has too much impact on others, directly and instantly if any proximity. Drinking can be somewhat controlled but also has similar problems.