It's only natural for anyone to be concerned what's going on just now. I just feel that no one can speculate what is going on in 2/3 months time, when there is so much uncertainty about the next few days.
All you can do is plan as if an event is going ahead. Book your accommodation, book your travel. Plan on it going ahead.
I would use the same caution I use for any event that is more than a few weeks in advance, regardless of the current situation . Just incase MY circumstances change and I can no longer go. As tempting as it is to book using "advanced saver rates" to save a few £'s. I don't. I've had my accommodation booked for Collectormania in Birmingham since sometime last year. But I can cancel it anytime up to and including 24hrs before.
Obviously my entry tickets/photos ops etc are a different story. If I cancel then i'm out of pocket.