Great Fun with smaller children that had never rafted before. Our 11, 8 and 6 year old all enjoyed the ride and got splashed a bit as we caught some of the gentler rapids along the way.
Wear shorts you can change out of after the ride as they are most likely to get wet as you sit on the side of the raft.
If you are more adventurous or have older children (all 8+), then you might opt for one of the other rides this company offers.
Enjoy your time in the Yellowstone area!!