Besides being informational you can also go horseback riding to down to the beach or over to the volcano, hike to the mineral waterfall, check out the honey bees, or take a ride on the only zip line on the island that has views of the Piton.
Would I make a day trip out of this? Depends on what you want to do. If you have kids it is a lot of fun and they will learn lots. If you are an adult then you still will probably learn a lot. We enjoyed it and it would have been nice to be able to do more but that is the downside of a group tour.
For more information check out their website here.