We were just there this past weekend. We just did the standard museum admission to start. Our family was two adults and DS12, and DS9. We all enjoyed it. There was a lot of variety for the enjoyment of all ages. We spent about 2 - 2.5 hours there. Other activity tickets had a lower age limit of 12, were pretty pricey, and we weren't sure we'd like the museum let alone some extra activity. The museum was fun and we all enjoyed it. I recommend getting there at opening at 9 am to avoid the crowds. Start with the regular museum admission. Perhaps others have done something extra and can comment on it.