To be blunt: if you have not yet gotten cancellations, expect them.
Events continue to be cancelled all over the world. Flights are getting cancelled and borders are closing throughout Europe. The UK and the US are likely to start imposing stricter rules now.
Event limits are now:
Austria to 5 people
Czechia to 50 people.
Denmark to 100 people.
France to 100 people.
Germany to 1000 people.
Ireland to 100 people (indoors).
Italy - no events allowed.
Poland to 50 people.
Spain - no events allowed.
Sweden to 500 people.
United Kingdom - limits expected very soon.
United States - The CDC recommend cancelling all events with more than 50 people.
This does not cover all countries with restrictions, but you get the idea.