Useful co-sleeping tip #6: Don't drink and sleep.
It seems reasonable to take all possible precautions when co-sleeping, since this is a world that, in general, will not support your choice to co-sleep. This severely reduces the amount of alcohol which can safely be imbibed. I find myself drinking the most when I am alone, that is, on nights when Jen is away with the girls.
I suppose this isn't really a co-sleeping tip, so much as a statement of fact.
And, yes, drinking makes me use appositives more frequently, why do you ask?