Yes, to both of these! It's beer and wine. You'd have to drink quite a few overpriced glasses of beer or wine to get drunk. I for one am glad Disney is deciding to treat adults like adults and allow wine or beer with what appears to be a lovely (and adult) dinner menu!
I don't buy any of the "Walt is rolling in his grave" stuff, whether it's said about this topic, price increases or anything else. Walt was a businessman and once the businessman would see the profit sheet from allowing wine and beer at dinner at one park restaurant, I'm sure he would have green-lit it himself.
And I don't think this is a sad turn of events. If you don't want to drink, then don't. But adults on vacation would sometimes like that option. Cheers!