I think the key is to run out and cut it yourself. Then keep it really well watered. Store-bought real trees aggravate my asthma, don't know if it's mold from being stored so long, or the chemical preservatives. The ones we cut ourselves never bother me.
However, IF you should let it dry out, DON'T let anyone try the experiment "let's see how flammable it really is". Even on the concrete driveway, it was SCARY. In ten minutes, it was nothing but ash.