What would be the least effective detail for a description about a new amusement park?

Question

Children sip lemonade and munch on popcorn

Tickets can be purchased in advance or at the entrance gate

all nine of the roller coasters have been tested for safety and comfort

guests must meet minimum height to ride any of the high speed rides

Answer 1

Children sip lemonade and munch on popcorn.
This detail may not be the least effective, but it is less essential in describing the amusement park compared to the other details.