I have a mini fridge for my soda. I leave my soda out of the fridge for up to a day and a half and then put it in the fridge, and it's fine. When I was just using sugar it sometimes took a while to open a bottle without it fizzing out, but I've started using artificial sweetener along with up to 7 tablespoons of sugar (to feed the yeast), and my soda has a nice head and is no where near exploding.
I've been making soda for a year, though, and the only time I've ever had soda explode while in the fridge was when we had rolling blackouts. I had a bottle of 5-month old soda that exploded because it wasn't consistently cool.