Anni is right
Children 0 - 18 Months: FREE Children 18 Months - 15 Years: $10.95* Adults 16 Years and above: $9.95* *Plus Tax Copied from the website
Adults are free but I wouldn't recommend going with a 9 week old. I went with my 8 month old and there's nothing for them to do unless they can run around and climb stuff.
Thanks! Your answer is awaiting moderation.