Do you have to pay ?and how much is it?

There is a website. Prices are different during the week. However they are done for the season

Yes they have a website to buy entry tickets

During the week it was $5 for adults and $3 for kids.

Yes and I believe it was 11.50 a person.

Yes, I'm pretty sure it is $10 for every 10 flowers you pick, but when you pay, you can wrap the flowers at their station for free