I was held in the waiting room and not allowed to leave even to access the food truck because my 2 teenagers aged 15 and a 1/2,were in the exhibit. This made me more determined not to buy a ticket. If this policy is strictly enforced, they should make the disclaimer very clear on the website. Ridiculous. The overpriced snacks in the waiting room consisted of packaged food and chips.
No need to purchase tickets in advance. That was my mistake.