For me, benzos do not feel like alcohol very much.
Alcohol is the far more recreational substance for me. Drinking alcohol produces a relatively moderate euphoria (i.e. there is clear mood elevation, but it's not the intense glowing euphoria I associate with amphetamines/opioids). Additionally, on alcohol I feel excited yet relaxed, more outgoing and more sociable.
Benzos on the other hand, are far less interesting (but useful none the less). They are effective anxiolytics, and are very useful for getting to sleep after stimulants/psychedelics and calming the anxious side effects of such drugs. They can be fun when mixed with opioids/alcohol as well. But, on their own they do not really elevate my mood at all. In fact, they make me feel quite apathetic and sleepy. The ataxia on high doses is somewhat reminiscent of being wasted drunk though.
As suggested by others, I found carisoprodol (Soma) to feel qualitatively more similar to alcohol. I haven't taken it in a while, but the times I took it, I did experience noticeable mood elevation and extroversion comparable to booze. Ataxia was more pronounced than comparable amounts of alcohol though.
The closest to being drunk without drinking is a combo.
1. High 1st plateau Dextromethorphan dose = Body tactile and vision change of ethanol.
2. A good sedating dose of Carisoprodol = Sedation of ethanol.
This is fairly safe to do...
These two at the same time should get you fairly close to mimicking a ethanol high, plus and minus a tidbit here and there...
Using that logic, I tried a combo of DXM+alprazolam to see if it would approximate alcohols effects. I think I used ~180mg DXM and 1mg alprazolam. I actually think the DXM on it's own is more fun, it was like the xanax took the excitement and other interesting aspects out of the DXM. I thought this combo felt mostly like alprazolam mentally, but with the DXM adding a pronounced body high.