Yes, you have the Pressefest in Germany (DKP), the Mayday celebration/Che Presente in in Belgium (Workers Party of Belgium), Fete l'Humanite in France (l'Humanite newspaper), the festival of l'Unita in Italy, Odigitis festival in Greece (KKE), Halo festival in the Czech Republic (KSCM), Working Class Music fesitval in the UK (Morning Star Newspaper/ CPB), Festival of the KPO in Austria, and probably some more

. But i think Festa do Avante is the largest together with the french and greek one, but the German pressefest is also pretty massive.
I definitely will be there again this year with some comrades, hopefully with a stand at the espacio international. I'll let you know!