My brain hurts (LLMP)

It feels like Disney intentionally makes some of these systems so complicated that customers end up giving up and spending more money. For a $200 Billion dollar company you'd think it could just be.... easier.

I've made a few posts already, so I'll keep this short. We're a family of five visiting all four parks (no Park Hopper) in a couple of weeks. Our kids are 6, 4, and 2.

I'm trying to figure out a cost estimate for Multi-Pass Lightning Lane. Is it a one-time cost per person per day? Do we pay once and get access to three rides, or do we pay per ride?

What do you think the total cost would be for my whole family for all four days? Are we looking at something around $500, or could it be closer to $1500?

Thanks