The full current EA news for the Henley Reach is below.
About the Festival the EA navigation says:
The Fawley Meadows section inside the regatta booms is reserved for the Festival 9am Friday to 6pm Sunday.

The Thames Traditional Boat Festival

The Festival happens a fortnight after the Henley Royal Regatta so as to take advantage of the regatta booms which are still in place.

Gloriana moored near the skiffs of the Thames Traditional Boat Society