What is the difference in the "In-person" ticket prices $15-26?

I paid $26.00 Per adult.

The visit to the momorial is free

There's no difference in price. All the same

No difference..but there is higher priced tickets ....26 ..is good

There's no difference...it's was the same.

Same

Only difference is if u don't want to wait in line to get your tickets!! If I was going back for the museum part I would order online!! Covid has made me think about standing and waiting!!

There is actually no difference in "in-person tickets prices" versus paying online. I was just there 3 weeks ago. I think due to COVID you may want to buy online to reserve your entry time. Otherwise you may not be able to get in that day.

Senior different price