If you get a mini-fridge, don't just turn the thermostat all the way up before verifying that the lower settings are not, in fact, enough to keep your drinks chilled properly.
If you ignore the previous rule, by all means don't load the thing up completely with your diet sodas.
If you do that, then please, by all that's holy, when you get a can out and open it and see that there is slush inside, don't merely comment "Hey, cool... I love slushy soda!" and go on with your day as if nothing is amiss.
Failing all of that, do thank whatever fates may be that when a soda bursts open (causing a LOUD bang from within, like something just broke off and fell hard inside), that it is a) diet, therefore not sticky, and b) frozen solid, making clean-up simple.
On the up-side, the three sodas that came close to bursting only bowed out the top of one and the bottom of two, so they're safe.