Oops, missed a couple:

The main events of the festival took place in the old mediaeval fortress. When we came inside we saw a big crowd of people in mediaeval clothes, most of the men had a sword or bowl.

Second day. The Mediaeval Knights Festival

The Mediaeval Knights Festival was organized by some groups of enthusiasts who are interested in the mediaeval history and all things related with that period. Some of these people are carried away by recreation of mediaeval costumes and other features of daily / normal life. Others ones take a great interest in fighting with real swords,  making a kind of sport from this hobby.
The main participants of the festival made a camp near an old church on a hill. They didn’t use convenient modern tents, because they wanted to live there as in the Middle Ages. So, they put up very simple cloth tents and all the time cooked all their food over fire, eating it off clay tableware.

The main events of the festival were carried out in the old mediaeval fortress. When we went inside we saw a big crowd of people in mediaeval costumes. Most of the men had sword or bowl ?? 'shield'?. Some of these people described their costumes. They demonstrated not only Russian mediaeval clothes, but ones from Europe and Asia as well.

One of the most exciting events of the festival was a real knights' tournament. There were something about 20 different bouts in which two men in real metal armour and helmets fought with each other with real swords. The weapons were very heavy, so I think it was a hard work for them! Each bout lasted only 2 minutes, but it was enough to exhaust them.

Second day. The Mediaeval Knightly Festival

The Mediaeval Knightly Festival was organized by some groups of enthusiasts which are interested in mediaeval history and all things related with this period. Some of these people get carried away with reconstructions of mediaeval costumes and other features of typical mediaeval life. Other ones take a great interest in real sword fighting, making a sport from this hobby.

The main participants of the festival made a camp near an old church on a hill. They didn’t use modern convenient tents, because they wanted to live there as in the Middle Ages. So, they set up very simple cloth tents and all the time cooked food with fire and ate it from clay tableware.

The main events of the festival were carried out in the old mediaeval fortress. When we came inside we saw a big crowd of people in mediaeval clothes, most of the men had swords or bowls. Some of these people described their costumes. They demonstrated not only Russian Mediaeval clothes, but ones from Europe and Asia as well.

One of the most exciting events of the festival was a real knightly tournament. There were about 20 different bouts in which two men in real metal armour and a helmet fought each other with real swords. The weaponry was very heavy, so I think it was hard work for them! Each bout lasted only 2 minutes, but it was enough to make them exhausted

Just for reference, either spelling of armour/armor or mediaevel/medieval is correct. Well done :-)