Most Helpful Guy
No actually... It does not completely cook out. Some science is involved here and you could test it or try to find info on alcohol evaporation cooking times... But from what I remember, for example, it takes hours before it actually evaporates when added in sauces.
But nevertheless, the amount is probably negligible... I personally wouldn't give it to young young kids just for the sake of the idea, prego women is ok.
Most Helpful Girl
The alcohol in the tequila that's in the batter will be cooked out. The tequila brushed on top of the cupcake will still have alcohol in it, but a little bit isn't gonna kill anyone lol. As long as you're not dousing the cupcake with a full shot you (and any kids or pregnant women) will be fine!
(those cupcakes sound amazing btw)