I've heard people trying to say you can burn off the alcohol that way and I'm calling bullshit on that.
Where exactly do u presume the alcohol is going to go? For arguments sake lets say you leave a pin in the stopper to prevent the bottle from exploding due to pressure build up. Then yes a very minute amount of alcohol that evaporated in the bottle will be forced out by the gaseous contents of the bottle expanding, but you have very, very little surface area in that bottle where liquid contacts gas, so your potential for evaporation in also very, very small. The alcohol in juice is mixed at the molecular level it cant be filtered out any more than u can filter salt out of ocean water, you cant. And the only way to evaporate enough of anything is with major surface area. Imagine trying to evaporate a 2 liter bottle of coke by leaving the cap off. Compare that to spilling that bottle on your driveway. You get my point.