A portable craft cocktail bar

I took up making cocktails at home as a pandemic hobby. I love making cocktails for my friends (and they seem to like it!) but I never had the aspiration to be an actual barman doing it down to a price and up to a pace. Smacks of hard work. But maybe it’d be fun to do it for a bigger bunch of friends? Like, 70,000 of them ? There are logistical issues. Making cocktails uses a lot of ice and…