[trad_anglican]

it appears a number of students were with a mother, when she stopped at a convenient store and bought the alcohol

If only the store hadn't been so "convenient," none of this would have happened.

[TankerKC]

I keyed in on the "Convenient Store" too. I always thought it was "Convenience Store." I googled "Convenient Store" and there were enough hits for me to believe it may be acceptable. The dictionary only has "convenience."