leaving it will be fine, if i brew up in the week i normally do a brew per day and bottle each one and pop it in the fridge, after 3 days of brewing (weds/thurs/fri) i add them all together and reduse into a drinkable amount on the saterday and consume on the saterday night.
there would only ever be a problem if the brews went moldy, but i wouldnt think thats gonna happen over night.
enjoy your brew
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