What a beautiful place, the river gives us that freshness we all need during the summer days. BBQ is allowed, that's cool. I am not sure if there is a place in Spain where it is allowed, in nature. It is forbidden, probably because of the high risk of forest fires.
The tradition of smashing watermelons? So, like a piñata, but a healthy and better option - the watermelon :)
I have always lived by a river or a sea. Right now we will be heading to a walk by ine little river and later cool down in the sea :)