I love going on boat rides and on a sunny afternoon going to Symmonds Yat and having a ride on a boat up the river is absolutely delightful. Reasonable price and good commentary.
You have to pay for parking and the amenities there were limited. Bathroom facilities were in the slot machine building but were clean and free. There were a few places to sit but only one place to buy food and one place for ice cream and drinks. Prices were reasonable and cheaper than I expected as there was no competition. There is grass you can sit on for a picnic if it is not too crowded. I would prefer to be there outside of the Bank holidays and mid summer as it would be a bit of a nightmare for me too many people means long queues. There are pubs and hotels just before the entrance into the field.