There is a minimum weight of 80 lbs, I believe...someone correct me if I'm wrong. But that is if the person is going solo. I honestly don't know what the max is for 2 people....lets see...dh is 180 and dd is 95.....but they were never weighed. They were strapped into a "diaper" with dd connected in front of dh, not side by side as I've seen elsewhere. A few hints......take a camera up with you and give a camera to someone on the boat to take pics of you while you are up. If someone on the ground wants to watch you, they will only see you from on the cruise ship, deck 10. Another hint.....ask to get your toes wet, and after you have been up a while, they will slowly let you down until your feet are in, then back up in the air! My dh had an 11:30 reservation, along with about 5 others, and was back for lunch about 12:30.........