Originally Posted by turbosaaber
I work at Miami artcc and we have a lot of unscheduled activations of special use airspace. Best to check with us just to be sure.
And on the other side of the same coin, special use airspace will often be under NOTAM due to being scheduled, but it won't actually be active at the time that you're wanting to pass through it. Many MOAs aren't active until military aircraft are approaching and asking the controlling agency to activate them, and then they're cold again as soon as the military aircraft leave. So it's still worth asking about the status even if you see a NOTAM or posted hours, it might save time and gas if you're inclined to go the long way around.
Controllers understand our concern with efficiency. Unless there is way to get accurate real-time updates displayed, talking to them is the way to go.