Rivers of Light is the only actual show. It is a water and light show with no fireworks (because of the proximity to the animals). It is very calm and serene, but very beautiful. Some people find it boring as it is not your usual bombastic Disney show. If you want to see it, you should definitely get a FaspPass for it or get there very early. The seating areas are small.
There is also Tree of Life Awakenings, which is random projections onto the tree that make the animals move and such. There is no need for special seating or viewing for this as it can be seen frequently from anywhere you can see the tree.