Hi,
I just though it would be a bit more, basing on fun, and not trying to save the environment as much as it did, but it was very good and it taught us a lot.
The speaker is only 13, so it's not a carefully considered and a well-formed sentence. He means this.
I thought the trip would focus more on fun for us, and less on the serious matter of saving the environment, which is where the focus actually was.
Best wishes, Clive