We did a banana boat ride last January on Princess' private island. I never felt there was any danger. Our group did not tip over at all, but the group in front of us could barely even get away from the shore without tipping over - however, it looked like they were all having a blast. It may be the difference between a cruise-ship sponsored ride and just some guy on a beach giving the rides. I will say my husband (and several other guys) said he is not sure if he would go again -- or at least would wear some protection if going :~) -- you get bounced around quite a bit.