Haha at the dessert. Oooops. Yeah, the deflation of my belly from lack of carbs is a bit gob smacking too. I hardly fart now either, whereas when I was smashing in the carbs I was farting pretty much all the time. It seems to sort your gut biome right out, so no sugars for the bad bacteria to feed on.
With the alcohol, for the first 6 months or so, and still now, my go to drink is spiced rum and sugar free ginger beer. Sugar free drinks still have sweeteners in, but as far as I know, sweeteners don't knock me out of ketosis. They may raise my insulin levels for that day, but it's literally one day a week, if that, so personally I don't worry about it too much. I've also had a few glasses of wine and cava. In the last couple of months I've introduced beer back in because my body is now pretty much fat adapted, so 3 or 4 pints doesn't knock me out of ketosis (according to the piss strips I use sometimes to make sure I'm pissing ketones). This is only a weekend thing though. And if I do knock myself out of ketosis, I find that I can get back in to it very quickly from a bit of fasting, using MCT oil, drinking bullet proof coffee or having some exogenous ketones. I've never looked for low carb ales in the pub. I think they are pretty popular in the US though, and the US seem to be years ahead of UK when it comes to keto.
Good luck with it and I hope you stick with it. For the majority of people, it's worth it. It's all about being disciplined and adapting to a few changes, and plenty of research.