Why is it not OK to say, "Heute mussten wir..."?
"Heute mussten wir außer Haus schlafen" is fine.
Could "draussen" be used in here somewhere? Or can it only be used to mean "outside" generally?
It's only outside without any further specification.
Actually, you could specify where outside (draußen im Garten), but not outside of what.
Thank you.